diff --git a/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift b/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift
index c1489b2cd..252235ddd 100644
--- a/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift
+++ b/apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift
@@ -6,8 +6,6 @@ import Utils
 import Views
 
 @MainActor final class HomeFeedViewModel: NSObject, ObservableObject {
-  let dateFormatter = DateFormatter.formatterISO8601
-
   var currentDetailViewModel: LinkItemDetailViewModel?
 
   private var fetchedResultsController: NSFetchedResultsController<LinkedItem>?
@@ -110,7 +108,7 @@ import Views
 
   func syncItems(dataService: DataService) async {
     let syncStart = Date.now
-    let lastSyncDate = dateFormatter.date(from: dataService.lastItemSyncTime) ?? Date(timeIntervalSinceReferenceDate: 0)
+    let lastSyncDate = dataService.lastItemSyncTime
 
     try? await dataService.syncOfflineItemsWithServerIfNeeded()
 
@@ -124,7 +122,7 @@ import Views
         self.isLoading = false
       }
     } else {
-      dataService.lastItemSyncTime = DateFormatter.formatterISO8601.string(from: syncStart)
+      dataService.lastItemSyncTime = syncStart
     }
 
     // If possible start prefetching new pages in the background
diff --git a/apple/OmnivoreKit/Sources/App/Views/Profile/ManageAccountView.swift b/apple/OmnivoreKit/Sources/App/Views/Profile/ManageAccountView.swift
index 020909470..f38c75176 100644
--- a/apple/OmnivoreKit/Sources/App/Views/Profile/ManageAccountView.swift
+++ b/apple/OmnivoreKit/Sources/App/Views/Profile/ManageAccountView.swift
@@ -39,7 +39,7 @@ struct ManageAccountView: View {
         )
         Button(
           action: {
-            dataService.resetCoreData()
+            dataService.resetLocalStorage()
           },
           label: { Text(LocalText.manageAccountResetCache) }
         )
diff --git a/apple/OmnivoreKit/Sources/Services/AudioSession/AudioController.swift b/apple/OmnivoreKit/Sources/Services/AudioSession/AudioController.swift
index 44403ccdf..74d5a8af6 100644
--- a/apple/OmnivoreKit/Sources/Services/AudioSession/AudioController.swift
+++ b/apple/OmnivoreKit/Sources/Services/AudioSession/AudioController.swift
@@ -543,8 +543,7 @@
     }
 
     public static func pathForAudioDirectory(itemID: String) -> URL {
-      FileManager.default
-        .urls(for: .documentDirectory, in: .userDomainMask)[0]
+      URL.om_documentsDirectory
         .appendingPathComponent("audio-\(itemID)/")
     }
 
diff --git a/apple/OmnivoreKit/Sources/Services/AudioSession/SpeechSynthesizer.swift b/apple/OmnivoreKit/Sources/Services/AudioSession/SpeechSynthesizer.swift
index 8df38fb02..5af60dece 100644
--- a/apple/OmnivoreKit/Sources/Services/AudioSession/SpeechSynthesizer.swift
+++ b/apple/OmnivoreKit/Sources/Services/AudioSession/SpeechSynthesizer.swift
@@ -56,8 +56,7 @@ struct SpeechDocument: Decodable {
   }
 
   static func audioDirectory(pageId: String) -> URL {
-    FileManager.default
-      .urls(for: .documentDirectory, in: .userDomainMask)[0]
+    URL.om_documentsDirectory
       .appendingPathComponent("audio-\(pageId)")
   }
 }
@@ -213,12 +212,10 @@ struct SpeechSynthesizer {
 
     let data = try await downloadData(session: session, request: speechItem.urlRequest)
 
-    let tempPath = FileManager.default
-      .urls(for: .cachesDirectory, in: .userDomainMask)[0]
+    let tempPath = URL.om_cachesDirectory
       .appendingPathComponent(UUID().uuidString + ".mp3")
 
-    let tempSMPath = FileManager.default
-      .urls(for: .cachesDirectory, in: .userDomainMask)[0]
+    let tempSMPath = URL.om_cachesDirectory
       .appendingPathComponent(UUID().uuidString + ".speechMarks")
 
     do {
diff --git a/apple/OmnivoreKit/Sources/Services/Authentication/Authenticator.swift b/apple/OmnivoreKit/Sources/Services/Authentication/Authenticator.swift
index b0ccfba59..ac54c7491 100644
--- a/apple/OmnivoreKit/Sources/Services/Authentication/Authenticator.swift
+++ b/apple/OmnivoreKit/Sources/Services/Authentication/Authenticator.swift
@@ -38,7 +38,7 @@ public final class Authenticator: ObservableObject {
   }
 
   public func logout(dataService: DataService, isAccountDeletion: Bool = false) {
-    dataService.resetCoreData()
+    dataService.resetLocalStorage()
     clearCreds()
     Authenticator.unregisterIntercomUser?()
     isLoggedIn = false
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift b/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift
index 5ca6c8aab..f878806bf 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift
@@ -29,9 +29,22 @@ public final class DataService: ObservableObject {
     persistentContainer.viewContext
   }
 
-  @AppStorage(UserDefaultKey.lastItemSyncTime.rawValue) public var lastItemSyncTime: String = {
-    DateFormatter.formatterISO8601.string(from: Date(timeIntervalSinceReferenceDate: 0))
-  }()
+  public var lastItemSyncTime: Date {
+    get {
+      guard
+        let str = UserDefaults.standard.string(forKey: UserDefaultKey.lastItemSyncTime.rawValue),
+        let date = DateFormatter.formatterISO8601.date(from: str)
+      else {
+        return Date(timeIntervalSinceReferenceDate: 0)
+      }
+      return date
+    }
+    set {
+      logger.trace("last item sync updated to \(newValue)")
+      let str = DateFormatter.formatterISO8601.string(from: newValue)
+      UserDefaults.standard.set(str, forKey: UserDefaultKey.lastItemSyncTime.rawValue)
+    }
+  }
 
   public init(appEnvironment: AppEnvironment, networker: Networker) {
     self.appEnvironment = appEnvironment
@@ -43,7 +56,7 @@ public final class DataService: ObservableObject {
     backgroundContext.mergePolicy = NSMergePolicy.mergeByPropertyObjectTrump
 
     if isFirstTimeRunningNewAppBuild() {
-      resetCoreData()
+      resetLocalStorage()
     } else {
       persistentContainer.loadPersistentStores { _, error in
         if let error = error {
@@ -102,10 +115,58 @@ public final class DataService: ObservableObject {
     }
   }
 
-  public func resetCoreData() {
-    lastItemSyncTime = DateFormatter.formatterISO8601.string(from: Date(timeIntervalSinceReferenceDate: 0))
+  private func clearDownloadedFiles() {
+    let relevantTypes = ["pdf", "mp3", "speechMarks"]
+    let fileMgr = FileManager()
+    logger.trace("removing cached downloads")
+
+    // clear the temporary files in the caches directory…
+    if let cacheFileURLs = try? fileMgr.contentsOfDirectory(
+      at: URL.om_cachesDirectory,
+      includingPropertiesForKeys: .none,
+      options: .skipsHiddenFiles
+    ) {
+      logger.trace("\(cacheFileURLs.count) file URLs in caches directory")
+      for fileURL in cacheFileURLs where relevantTypes.contains(fileURL.pathExtension) {
+        logger.trace("removing \(fileURL.absoluteString)")
+        try? fileMgr.removeItem(at: fileURL)
+      }
+    }
+
+    // …and also the copies written to Documents
+    let resourceKeys = Set<URLResourceKey>([.nameKey, .isDirectoryKey])
+    if let documentsFileURLs = try? fileMgr.contentsOfDirectory(
+      at: URL.om_documentsDirectory,
+      includingPropertiesForKeys: Array(resourceKeys),
+      options: .skipsHiddenFiles
+    ) {
+      logger.trace("\(documentsFileURLs.count) file URLs in documents directory")
+      for fileURL in documentsFileURLs {
+        guard
+          let resourceValues = try? fileURL.resourceValues(forKeys: resourceKeys),
+          let isDirectory = resourceValues.isDirectory,
+          let name = resourceValues.name
+        else {
+          continue
+        }
+        if isDirectory {
+          if name.hasPrefix("audio-") {
+            logger.trace("removing \(fileURL.absoluteString)")
+            try? fileMgr.removeItem(at: fileURL)
+          }
+        } else if relevantTypes.contains(fileURL.pathExtension) {
+          logger.trace("removing \(fileURL.absoluteString)")
+          try? fileMgr.removeItem(at: fileURL)
+        }
+      }
+    }
+  }
+
+  public func resetLocalStorage() {
+    lastItemSyncTime = Date(timeIntervalSinceReferenceDate: 0)
 
     clearCoreData()
+    clearDownloadedFiles()
 
     persistentContainer = PersistentContainer.make()
     persistentContainer.loadPersistentStores { _, error in
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Public/LinkedItemLoading.swift b/apple/OmnivoreKit/Sources/Services/DataService/Public/LinkedItemLoading.swift
index ad776f9ce..a4d68bdce 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Public/LinkedItemLoading.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Public/LinkedItemLoading.swift
@@ -93,7 +93,7 @@ public extension DataService {
         }
       }
       DispatchQueue.main.sync {
-        self.lastItemSyncTime = DateFormatter.formatterISO8601.string(from: Date.now)
+        self.lastItemSyncTime = Date.now
         onComplete()
       }
     }
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Public/PDFLoading.swift b/apple/OmnivoreKit/Sources/Services/DataService/Public/PDFLoading.swift
index c22e01542..0f4315844 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Public/PDFLoading.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Public/PDFLoading.swift
@@ -21,8 +21,7 @@ public extension DataService {
 
     var localPdfURL: URL?
 
-    let tempPath = FileManager.default
-      .urls(for: .cachesDirectory, in: .userDomainMask)[0]
+    let tempPath = URL.om_cachesDirectory
       .appendingPathComponent(UUID().uuidString + ".pdf")
 
     try await backgroundContext.perform { [weak self] in
diff --git a/apple/OmnivoreKit/Sources/Utils/PDFUtils.swift b/apple/OmnivoreKit/Sources/Utils/PDFUtils.swift
index b722edc3f..3a058ef6b 100644
--- a/apple/OmnivoreKit/Sources/Utils/PDFUtils.swift
+++ b/apple/OmnivoreKit/Sources/Utils/PDFUtils.swift
@@ -10,8 +10,7 @@ import QuickLookThumbnailing
 public enum PDFUtils {
   public static func copyToLocal(url: URL) throws -> String {
     let subPath = UUID().uuidString + ".pdf"
-    let dest = FileManager.default
-      .urls(for: .documentDirectory, in: .userDomainMask)[0]
+    let dest = URL.om_documentsDirectory
       .appendingPathComponent(subPath)
 
     try FileManager.default.copyItem(at: url, to: dest)
@@ -20,8 +19,7 @@ public enum PDFUtils {
 
   public static func moveToLocal(url: URL) throws -> String {
     let subPath = UUID().uuidString + ".pdf"
-    let dest = FileManager.default
-      .urls(for: .documentDirectory, in: .userDomainMask)[0]
+    let dest = URL.om_documentsDirectory
       .appendingPathComponent(subPath)
 
     try FileManager.default.moveItem(at: url, to: dest)
@@ -29,8 +27,7 @@ public enum PDFUtils {
   }
 
   public static func localPdfURL(filename: String) -> URL? {
-    let url = FileManager.default
-      .urls(for: .documentDirectory, in: .userDomainMask)[0]
+    let url = URL.om_documentsDirectory
       .appendingPathComponent(filename)
 
     return url
diff --git a/apple/OmnivoreKit/Sources/Utils/URLExtension.swift b/apple/OmnivoreKit/Sources/Utils/URLExtension.swift
new file mode 100644
index 000000000..0eb03a615
--- /dev/null
+++ b/apple/OmnivoreKit/Sources/Utils/URLExtension.swift
@@ -0,0 +1,27 @@
+import Foundation
+
+public extension URL {
+  // swiftlint:disable:next identifier_name
+  static var om_documentsDirectory: URL {
+    if #unavailable(iOS 16, tvOS 16, macOS 13) {
+      guard let url = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else {
+        fatalError("Could not determine the user's documents directory")
+      }
+      return url
+    } else {
+      return URL.documentsDirectory
+    }
+  }
+
+  // swiftlint:disable:next identifier_name
+  static var om_cachesDirectory: URL {
+    if #unavailable(iOS 16, tvOS 16, macOS 13) {
+      guard let url = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first else {
+        fatalError("Could not determine the user's caches directory")
+      }
+      return url
+    } else {
+      return URL.cachesDirectory
+    }
+  }
+}