diff --git a/Mastodon.xcworkspace/xcshareddata/swiftpm/Package.resolved b/Mastodon.xcworkspace/xcshareddata/swiftpm/Package.resolved
index f222992f7..e89928123 100644
--- a/Mastodon.xcworkspace/xcshareddata/swiftpm/Package.resolved
+++ b/Mastodon.xcworkspace/xcshareddata/swiftpm/Package.resolved
@@ -19,15 +19,6 @@
           "version": "4.2.0"
         }
       },
-      {
-        "package": "CommonOSLog",
-        "repositoryURL": "https://github.com/MainasuK/CommonOSLog",
-        "state": {
-          "branch": null,
-          "revision": "c121624a30698e9886efe38aebb36ff51c01b6c2",
-          "version": "0.1.1"
-        }
-      },
       {
         "package": "FaviconFinder",
         "repositoryURL": "https://github.com/will-lumley/FaviconFinder.git",
diff --git a/Mastodon/Scene/Search/SearchDetail/SearchHistory/SearchHistoryViewModel.swift b/Mastodon/Scene/Search/SearchDetail/SearchHistory/SearchHistoryViewModel.swift
index 5078895c0..d1360efc4 100644
--- a/Mastodon/Scene/Search/SearchDetail/SearchHistory/SearchHistoryViewModel.swift
+++ b/Mastodon/Scene/Search/SearchDetail/SearchHistory/SearchHistoryViewModel.swift
@@ -8,7 +8,6 @@
 import UIKit
 import Combine
 import CoreDataStack
-import CommonOSLog
 import MastodonCore
 
 final class SearchHistoryViewModel {
diff --git a/Mastodon/Scene/Search/SearchDetail/SearchResult/SearchResultViewModel.swift b/Mastodon/Scene/Search/SearchDetail/SearchResult/SearchResultViewModel.swift
index f66921535..c3ddc2f0a 100644
--- a/Mastodon/Scene/Search/SearchDetail/SearchResult/SearchResultViewModel.swift
+++ b/Mastodon/Scene/Search/SearchDetail/SearchResult/SearchResultViewModel.swift
@@ -10,7 +10,6 @@ import Combine
 import CoreData
 import CoreDataStack
 import GameplayKit
-import CommonOSLog
 import MastodonSDK
 import MastodonCore
 
diff --git a/MastodonSDK/Package.swift b/MastodonSDK/Package.swift
index 12aadd888..75990451c 100644
--- a/MastodonSDK/Package.swift
+++ b/MastodonSDK/Package.swift
@@ -46,7 +46,6 @@ let package = Package(
         .package(url: "https://github.com/kean/Nuke-FLAnimatedImage-Plugin.git", from: "8.0.0"),
         .package(url: "https://github.com/kean/Nuke.git", from: "10.3.1"),
         .package(url: "https://github.com/kishikawakatsumi/KeychainAccess.git", from: "4.2.2"),
-        .package(url: "https://github.com/MainasuK/CommonOSLog", from: "0.1.1"),
         .package(url: "https://github.com/MainasuK/FPSIndicator.git", from: "1.0.0"),
         .package(url: "https://github.com/slackhq/PanModal.git", from: "1.2.7"),
         .package(url: "https://github.com/TimOliver/TOCropViewController.git", from: "2.6.1"),
@@ -93,7 +92,6 @@ let package = Package(
                 "MastodonSDK",
                 .product(name: "Alamofire", package: "Alamofire"),
                 .product(name: "AlamofireImage", package: "AlamofireImage"),
-                .product(name: "CommonOSLog", package: "CommonOSLog"),
                 .product(name: "ArkanaKeys", package: "ArkanaKeys"),
                 .product(name: "KeychainAccess", package: "KeychainAccess"),
                 .product(name: "MetaTextKit", package: "MetaTextKit")
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Account.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Account.swift
index 812c558d8..c1642218c 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Account.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Account.swift
@@ -9,7 +9,6 @@ import os.log
 import CoreDataStack
 import Foundation
 import Combine
-import CommonOSLog
 import MastodonCommon
 import MastodonSDK
 
@@ -49,8 +48,6 @@ extension APIService {
             )
             
             let flag = result.isNewInsertion ? "+" : "-"
-            let logger = Logger(subsystem: "APIService", category: "AccountInfo")
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): fetch mastodon user [\(flag)](\(response.value.id))\(response.value.username)")
         }
         
         return response
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Block.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Block.swift
index 19c5ff437..2dafe4676 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Block.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Block.swift
@@ -9,7 +9,6 @@ import UIKit
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
@@ -65,7 +64,6 @@ extension APIService {
         user: ManagedObjectRecord<MastodonUser>,
         authenticationBox: MastodonAuthenticationBox
     ) async throws -> Mastodon.Response.Content<Mastodon.Entity.Relationship> {
-        let logger = Logger(subsystem: "APIService", category: "Block")
         
         let managedObjectContext = backgroundManagedObjectContext
         let blockContext: MastodonBlockContext = try await managedObjectContext.performChanges {
@@ -84,7 +82,7 @@ extension APIService {
                 // will do block action. set to unfollow
                 user.update(isFollowing: false, by: me)
             }
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Local] update user[\(user.id)](\(user.username)) block state: \(!isBlocking)")
+
             return MastodonBlockContext(
                 sourceUserID: me.id,
                 targetUserID: user.id,
@@ -115,7 +113,6 @@ extension APIService {
             }
         } catch {
             result = .failure(error)
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] update user[\(blockContext.targetUserID)](\(blockContext.targetUsername)) block failure: \(error.localizedDescription)")
         }
         
         try await managedObjectContext.performChanges {
@@ -135,12 +132,10 @@ extension APIService {
                         networkDate: response.networkDate
                     )
                 )
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] update user[\(blockContext.targetUserID)](\(blockContext.targetUsername)) block state: \(relationship.blocking)")
             case .failure:
                 // rollback
                 user.update(isBlocking: blockContext.isBlocking, by: me)
                 user.update(isFollowing: blockContext.isFollowing, by: me)
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] rollback user[\(blockContext.targetUserID)](\(blockContext.targetUsername)) block state")
             }
         }
         
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Bookmark.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Bookmark.swift
index 0d8c243f8..43a050ea2 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Bookmark.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Bookmark.swift
@@ -10,7 +10,6 @@ import Combine
 import MastodonSDK
 import CoreData
 import CoreDataStack
-import CommonOSLog
 
 extension APIService {
 
@@ -23,8 +22,7 @@ extension APIService {
         record: ManagedObjectRecord<Status>,
         authenticationBox: MastodonAuthenticationBox
     ) async throws -> Mastodon.Response.Content<Mastodon.Entity.Status> {
-        let logger = Logger(subsystem: "APIService", category: "Bookmark")
-        
+
         let managedObjectContext = backgroundManagedObjectContext
         
         // update bookmark state and retrieve bookmark context
@@ -42,7 +40,6 @@ extension APIService {
                 statusID: status.id,
                 isBookmarked: isBookmarked
             )
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update status bookmark: \(!isBookmarked)")
             return context
         }
 
@@ -59,7 +56,6 @@ extension APIService {
             result = .success(response)
         } catch {
             result = .failure(error)
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update bookmark failure: \(error.localizedDescription)")
         }
         
         // update bookmark state
@@ -83,11 +79,9 @@ extension APIService {
                         networkDate: response.networkDate
                     )
                 )
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update status bookmark: \(response.value.bookmarked.debugDescription)")
             case .failure:
                 // rollback
                 status.update(bookmarked: bookmarkContext.isBookmarked, by: me)
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): rollback status bookmark")
             }
         }
         
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+CustomEmoji.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+CustomEmoji.swift
index 647bb4956..2586da81a 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+CustomEmoji.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+CustomEmoji.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+DomainBlock.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+DomainBlock.swift
index 138997500..3bfa519c7 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+DomainBlock.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+DomainBlock.swift
@@ -6,7 +6,6 @@
 //
 
 import Combine
-import CommonOSLog
 import CoreData
 import CoreDataStack
 import Foundation
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Favorite.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Favorite.swift
index 4abe9ba5f..eaa87d15e 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Favorite.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Favorite.swift
@@ -11,7 +11,6 @@ import Combine
 import MastodonSDK
 import CoreData
 import CoreDataStack
-import CommonOSLog
 
 extension APIService {
     
@@ -25,8 +24,7 @@ extension APIService {
         record: ManagedObjectRecord<Status>,
         authenticationBox: MastodonAuthenticationBox
     ) async throws -> Mastodon.Response.Content<Mastodon.Entity.Status> {
-        let logger = Logger(subsystem: "APIService", category: "Favorite")
-        
+
         let managedObjectContext = backgroundManagedObjectContext
         
         // update like state and retrieve like context
@@ -48,7 +46,6 @@ extension APIService {
                 isFavorited: isFavorited,
                 favoritedCount: favoritedCount
             )
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update status favorite: \(!isFavorited), \(favoriteCount)")
             return context
         }
 
@@ -65,7 +62,6 @@ extension APIService {
             result = .success(response)
         } catch {
             result = .failure(error)
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update favorite failure: \(error.localizedDescription)")
         }
         
         // update like state
@@ -92,12 +88,10 @@ extension APIService {
                 if favoriteContext.isFavorited {
                     status.update(favouritesCount: max(0, status.favouritesCount - 1))  // undo API return count has delay. Needs -1 local
                 }
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update status favorite: \(response.value.favourited.debugDescription)")
             case .failure:
                 // rollback
                 status.update(liked: favoriteContext.isFavorited, by: me)
                 status.update(favouritesCount: favoriteContext.favoritedCount)
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): rollback status favorite")
             }
         }
         
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follow.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follow.swift
index 442d293ce..75ed5ba38 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follow.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follow.swift
@@ -9,7 +9,6 @@ import UIKit
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
@@ -34,8 +33,7 @@ extension APIService {
         user: ManagedObjectRecord<MastodonUser>,
         authenticationBox: MastodonAuthenticationBox
     ) async throws -> Mastodon.Response.Content<Mastodon.Entity.Relationship> {
-        let logger = Logger(subsystem: "APIService", category: "Follow")
-        
+
         let managedObjectContext = backgroundManagedObjectContext
         let _followContext: MastodonFollowContext? = try await managedObjectContext.performChanges {
             guard let me = authenticationBox.authenticationRecord.object(in: managedObjectContext)?.user else { return nil }
@@ -49,17 +47,14 @@ extension APIService {
                 // unfollow
                 user.update(isFollowing: false, by: me)
                 user.update(isFollowRequested: false, by: me)
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Local] update user friendship: undo follow")
             } else {
                 // follow
                 if user.locked {
                     user.update(isFollowing: false, by: me)
                     user.update(isFollowRequested: true, by: me)
-                    logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Local] update user friendship: pending follow")
                 } else {
                     user.update(isFollowing: true, by: me)
                     user.update(isFollowRequested: false, by: me)
-                    logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Local] update user friendship: following")
                 }
             }
             let context = MastodonFollowContext(
@@ -88,7 +83,6 @@ extension APIService {
             ).singleOutput()
             result = .success(response)
         } catch {
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] update friendship failure: \(error.localizedDescription)")
             result = .failure(error)
         }
         
@@ -109,12 +103,10 @@ extension APIService {
                     )
                 )
                 let following = response.value.following
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] update user friendship: following \(following)")
             case .failure:
                 // rollback
                 user.update(isFollowing: followContext.isFollowing, by: me)
                 user.update(isFollowRequested: followContext.isPending, by: me)
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] rollback user friendship")
             }
         }
         
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+FollowRequest.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+FollowRequest.swift
index 74650131d..e5e330c0f 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+FollowRequest.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+FollowRequest.swift
@@ -9,7 +9,6 @@ import UIKit
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follower.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follower.swift
index 0f0ea1a59..05670604d 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follower.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Follower.swift
@@ -9,7 +9,6 @@ import UIKit
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Following.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Following.swift
index 313d715ed..b6a01998f 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Following.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Following.swift
@@ -9,7 +9,6 @@ import UIKit
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HashtagTimeline.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HashtagTimeline.swift
index d2fbe844a..91c2f8201 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HashtagTimeline.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HashtagTimeline.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HomeTimeline.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HomeTimeline.swift
index dad844d37..97bd53469 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HomeTimeline.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+HomeTimeline.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Instance.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Instance.swift
index eb39b5585..b5a549903 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Instance.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Instance.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Mute.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Mute.swift
index cc46872f4..7b6b6c6c3 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Mute.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Mute.swift
@@ -9,7 +9,6 @@ import UIKit
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
@@ -64,8 +63,7 @@ extension APIService {
         user: ManagedObjectRecord<MastodonUser>,
         authenticationBox: MastodonAuthenticationBox
     ) async throws -> Mastodon.Response.Content<Mastodon.Entity.Relationship> {
-        let logger = Logger(subsystem: "APIService", category: "Mute")
-        
+
         let managedObjectContext = backgroundManagedObjectContext
         let muteContext: MastodonMuteContext = try await managedObjectContext.performChanges {
             guard let user = user.object(in: managedObjectContext),
@@ -79,7 +77,6 @@ extension APIService {
             
             // toggle mute state
             user.update(isMuting: !isMuting, by: me)
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Local] update user[\(user.id)](\(user.username)) mute state: \(!isMuting)")
             return MastodonMuteContext(
                 sourceUserID: me.id,
                 targetUserID: user.id,
@@ -111,7 +108,6 @@ extension APIService {
             }
         } catch {
             result = .failure(error)
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] update user[\(muteContext.targetUserID)](\(muteContext.targetUsername)) mute failure: \(error.localizedDescription)")
         }
         
         try await managedObjectContext.performChanges {
@@ -131,11 +127,9 @@ extension APIService {
                         networkDate: response.networkDate
                     )
                 )
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] update user[\(muteContext.targetUserID)](\(muteContext.targetUsername)) mute state: \(relationship.muting.debugDescription)")
             case .failure:
                 // rollback
                 user.update(isMuting: muteContext.isMuting, by: me)
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): [Remote] rollback user[\(muteContext.targetUserID)](\(muteContext.targetUsername)) mute state")
             }
         }
         
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Poll.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Poll.swift
index 5a4b38b29..505a06032 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Poll.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Poll.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+PublicTimeline.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+PublicTimeline.swift
index 21f198299..0636f70c4 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+PublicTimeline.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+PublicTimeline.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Reblog.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Reblog.swift
index 0dc1a40e5..73b77fa3c 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Reblog.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Reblog.swift
@@ -10,7 +10,6 @@ import Combine
 import MastodonSDK
 import CoreData
 import CoreDataStack
-import CommonOSLog
 
 extension APIService {
     
@@ -24,7 +23,6 @@ extension APIService {
         record: ManagedObjectRecord<Status>,
         authenticationBox: MastodonAuthenticationBox
     ) async throws -> Mastodon.Response.Content<Mastodon.Entity.Status> {
-        let logger = Logger(subsystem: "APIService", category: "Reblog")
         let managedObjectContext = backgroundManagedObjectContext
         
         // update repost state and retrieve repost context
@@ -45,7 +43,6 @@ extension APIService {
                 isReblogged: isReblogged,
                 rebloggedCount: rebloggedCount
             )
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update status reblog: \(!isReblogged), \(reblogCount)")
             return reblogContext
         }
         guard let reblogContext = _reblogContext else {
@@ -65,7 +62,6 @@ extension APIService {
             result = .success(response)
         } catch {
             result = .failure(error)
-            logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update reblog failure: \(error.localizedDescription)")
         }
         
         // update repost state
@@ -92,12 +88,10 @@ extension APIService {
                 if reblogContext.isReblogged {
                     status.update(reblogsCount: max(0, status.reblogsCount - 1))        // undo API return count has delay. Needs -1 local
                 }
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): update status reblog: \(!reblogContext.isReblogged)")
             case .failure:
                 // rollback
                 status.update(reblogged: reblogContext.isReblogged, by: me)
                 status.update(reblogsCount: reblogContext.rebloggedCount)
-                logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): rollback status reblog")
             }
         }
         
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Relationship.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Relationship.swift
index f5c108725..7cbd63ca6 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Relationship.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Relationship.swift
@@ -9,7 +9,6 @@ import UIKit
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Search.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Search.swift
index 5e6217bcf..e1ef7b0f5 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Search.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Search.swift
@@ -8,7 +8,6 @@
 import Foundation
 import Combine
 import MastodonSDK
-import CommonOSLog
 
 extension APIService {
  
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status+Translate.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status+Translate.swift
index a802d6489..483f52431 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status+Translate.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status+Translate.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status.swift
index 52b169ee7..05ce66792 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+Status.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+UserTimeline.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+UserTimeline.swift
index fdf90a2aa..b0ee77f26 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+UserTimeline.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+UserTimeline.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+WebFinger.swift b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+WebFinger.swift
index b542cbe8d..26d86edf4 100644
--- a/MastodonSDK/Sources/MastodonCore/Service/API/APIService+WebFinger.swift
+++ b/MastodonSDK/Sources/MastodonCore/Service/API/APIService+WebFinger.swift
@@ -9,7 +9,6 @@ import Foundation
 import Combine
 import CoreData
 import CoreDataStack
-import CommonOSLog
 import MastodonSDK
 
 extension APIService {
diff --git a/NotificationService/NotificationService.swift b/NotificationService/NotificationService.swift
index d38884aff..a17cbfd2a 100644
--- a/NotificationService/NotificationService.swift
+++ b/NotificationService/NotificationService.swift
@@ -6,7 +6,6 @@
 //
 
 import UserNotifications
-import CommonOSLog
 import CryptoKit
 import AlamofireImage
 import MastodonCore
@@ -22,13 +21,11 @@ class NotificationService: UNNotificationServiceExtension {
         
         if let bestAttemptContent = bestAttemptContent {
             // Modify the notification content here...
-            os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
 
             let privateKey = AppSecret.default.notificationPrivateKey
             let auth = AppSecret.default.notificationAuth
             
             guard let encodedPayload = bestAttemptContent.userInfo["p"] as? String else {
-                os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: invalid payload", ((#file as NSString).lastPathComponent), #line, #function)
                 contentHandler(bestAttemptContent)
                 return
             }
@@ -36,13 +33,11 @@ class NotificationService: UNNotificationServiceExtension {
             
             guard let encodedPublicKey = bestAttemptContent.userInfo["k"] as? String,
                   let publicKey = NotificationService.publicKey(encodedPublicKey: encodedPublicKey) else {
-                os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: invalid public key", ((#file as NSString).lastPathComponent), #line, #function)
                 contentHandler(bestAttemptContent)
                 return
             }
             
             guard let encodedSalt = bestAttemptContent.userInfo["s"] as? String else {
-                os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: invalid salt", ((#file as NSString).lastPathComponent), #line, #function)
                 contentHandler(bestAttemptContent)
                 return
             }
@@ -75,10 +70,9 @@ class NotificationService: UNNotificationServiceExtension {
                 ImageDownloader.default.download(URLRequest(url: url), completion: { [weak self] response in
                     guard let _ = self else { return }
                     switch response.result {
-                    case .failure(let error):
-                        os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: download image %s fail: %s", ((#file as NSString).lastPathComponent), #line, #function, url.debugDescription, error.localizedDescription)
+                    case .failure(_):
+                        break
                     case .success(let image):
-                        os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: download image %s success", ((#file as NSString).lastPathComponent), #line, #function, url.debugDescription)
                         try? image.pngData()?.write(to: fileURL)
                         if let attachment = try? UNNotificationAttachment(identifier: filename, url: fileURL, options: nil) {
                             bestAttemptContent.attachments = [attachment]