general: removal of AppStoreDetector, just use build flags

Gaze.xcodeproj/project.pbxproj

@@ -8,6 +8,7 @@
 
 /* Begin PBXBuildFile section */
 		275915892F132A9200D0E60D /* Lottie in Frameworks */ = {isa = PBXBuildFile; productRef = 27AE10B12F10B1FC00E00DBC /* Lottie */; };
+		27SPARKLE00000000003 /* Sparkle in Frameworks */ = {isa = PBXBuildFile; productRef = 27SPARKLE00000000002 /* Sparkle */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -70,6 +71,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				275915892F132A9200D0E60D /* Lottie in Frameworks */,
+				27SPARKLE00000000003 /* Sparkle in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -131,6 +133,7 @@
 			name = Gaze;
 			packageProductDependencies = (
 				27AE10B12F10B1FC00E00DBC /* Lottie */,
+				27SPARKLE00000000002 /* Sparkle */,
 			);
 			productName = Gaze;
 			productReference = 27A21B3C2F0F69DC0018C4F3 /* Gaze.app */;
@@ -216,6 +219,7 @@
 			minimizedProjectReferenceProxies = 1;
 			packageReferences = (
 				27AE10B02F10B1FC00E00DBC /* XCRemoteSwiftPackageReference "lottie-spm" */,
+				27SPARKLE00000000001 /* XCRemoteSwiftPackageReference "Sparkle" */,
 			);
 			preferredProjectObjectVersion = 77;
 			productRefGroup = 27A21B3D2F0F69DC0018C4F3 /* Products */;
@@ -435,7 +439,6 @@
 				);
 				MACOSX_DEPLOYMENT_TARGET = 13.0;
 				MARKETING_VERSION = 0.4.0;
-				OTHER_SWIFT_FLAGS = "-D APPSTORE";
 				PRODUCT_BUNDLE_IDENTIFIER = com.mikefreno.Gaze;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				REGISTER_APP_GROUPS = YES;
@@ -472,7 +475,6 @@
 				);
 				MACOSX_DEPLOYMENT_TARGET = 13.0;
 				MARKETING_VERSION = 0.4.0;
-				OTHER_SWIFT_FLAGS = "-D APPSTORE";
 				PRODUCT_BUNDLE_IDENTIFIER = com.mikefreno.Gaze;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				REGISTER_APP_GROUPS = YES;
@@ -615,6 +617,14 @@
 				minimumVersion = 4.6.0;
 			};
 		};
+		27SPARKLE00000000001 /* XCRemoteSwiftPackageReference "Sparkle" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/sparkle-project/Sparkle";
+			requirement = {
+				kind = exactVersion;
+				version = 2.8.1;
+			};
+		};
 /* End XCRemoteSwiftPackageReference section */
 
 /* Begin XCSwiftPackageProductDependency section */
@@ -623,6 +633,11 @@
 			package = 27AE10B02F10B1FC00E00DBC /* XCRemoteSwiftPackageReference "lottie-spm" */;
 			productName = Lottie;
 		};
+		27SPARKLE00000000002 /* Sparkle */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 27SPARKLE00000000001 /* XCRemoteSwiftPackageReference "Sparkle" */;
+			productName = Sparkle;
+		};
 /* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = 27A21B342F0F69DC0018C4F3 /* Project object */;

Gaze.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -1,15 +1,24 @@
 {
-  "originHash": "513d974fbede884a919977d3446360023f6e3239ac314f4fbd9657e80aca7560",
+  "originHash" : "513d974fbede884a919977d3446360023f6e3239ac314f4fbd9657e80aca7560",
-  "pins": [
+  "pins" : [
     {
-      "identity": "lottie-spm",
+      "identity" : "lottie-spm",
-      "kind": "remoteSourceControl",
+      "kind" : "remoteSourceControl",
-      "location": "https://github.com/airbnb/lottie-spm.git",
+      "location" : "https://github.com/airbnb/lottie-spm.git",
-      "state": {
+      "state" : {
-        "revision": "69faaefa7721fba9e434a52c16adf4329c9084db",
+        "revision" : "69faaefa7721fba9e434a52c16adf4329c9084db",
-        "version": "4.6.0"
+        "version" : "4.6.0"
+      }
+    },
+    {
+      "identity" : "sparkle",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/sparkle-project/Sparkle",
+      "state" : {
+        "revision" : "5581748cef2bae787496fe6d61139aebe0a451f6",
+        "version" : "2.8.1"
       }
     }
   ],
-  "version": 3
+  "version" : 3
 }

Gaze/AppDelegate.swift

@@ -31,15 +31,6 @@ class AppDelegate: NSObject, NSApplicationDelegate, ObservableObject {
             updateManager = UpdateManager.shared
         }
         
-        // Detect App Store version asynchronously at launch
-        Task {
-            do {
-                await settingsManager.detectAppStoreVersion()
-            } catch {
-                // Handle error silently in production
-            }
-        }
-        
         setupLifecycleObservers()
         
         observeSettingsChanges()

Gaze/Gaze.entitlements

@@ -6,5 +6,10 @@
 	<true/>
 	<key>com.apple.security.network.client</key>
 	<true/>
+	<key>com.apple.security.temporary-exception.mach-lookup.global-name</key>
+	<array>
+		<string>$(PRODUCT_BUNDLE_IDENTIFIER)-spks</string>
+		<string>$(PRODUCT_BUNDLE_IDENTIFIER)-spki</string>
+	</array>
 </dict>
 </plist>

Gaze/Info.plist

@@ -22,5 +22,15 @@
 	<string>$(MARKETING_VERSION)</string>
 	<key>NSHumanReadableCopyright</key>
 	<string>Copyright © 2026 Mike Freno. All rights reserved.</string>
+	<key>SUPublicEDKey</key>
+	<string>Z2RmohI1y2bgeGQQUDqO9F0HNF2AzFotOt8CwGB6VJM=</string>
+	<key>SUFeedURL</key>
+	<string>https://freno.me/api/Gaze/appcast.xml</string>
+	<key>SUEnableAutomaticChecks</key>
+	<true/>
+	<key>SUScheduledCheckInterval</key>
+	<integer>86400</integer>
+	<key>SUEnableInstallerLauncherService</key>
+	<true/>
 </dict>
 </plist>

Gaze/Models/AppSettings.swift

@@ -46,9 +46,6 @@ struct AppSettings: Codable, Equatable, Hashable {
     var launchAtLogin: Bool
     var playSounds: Bool
 
-    // App Store detection (cached at launch, not persisted)
-    var isAppStoreVersion: Bool
-
     init(
         lookAwayTimer: TimerConfiguration = TimerConfiguration(
             enabled: true, intervalSeconds: 20 * 60),
@@ -61,8 +58,7 @@ struct AppSettings: Codable, Equatable, Hashable {
         subtleReminderSize: ReminderSize = .medium,
         hasCompletedOnboarding: Bool = false,
         launchAtLogin: Bool = false,
-        playSounds: Bool = true,
+        playSounds: Bool = true
-        isAppStoreVersion: Bool = true
     ) {
         self.lookAwayTimer = lookAwayTimer
         self.lookAwayCountdownSeconds = lookAwayCountdownSeconds
@@ -73,7 +69,6 @@ struct AppSettings: Codable, Equatable, Hashable {
         self.hasCompletedOnboarding = hasCompletedOnboarding
         self.launchAtLogin = launchAtLogin
         self.playSounds = playSounds
-        self.isAppStoreVersion = isAppStoreVersion
     }
 
     static var defaults: AppSettings {
@@ -86,67 +81,7 @@ struct AppSettings: Codable, Equatable, Hashable {
             subtleReminderSize: .medium,
             hasCompletedOnboarding: false,
             launchAtLogin: false,
-            playSounds: true,
+            playSounds: true
-            isAppStoreVersion: false
         )
     }
-
-    /// Manual Equatable implementation required because isAppStoreVersion
-    /// is excluded from Codable persistence but included in equality checks
-    static func == (lhs: AppSettings, rhs: AppSettings) -> Bool {
-        lhs.lookAwayTimer == rhs.lookAwayTimer
-            && lhs.lookAwayCountdownSeconds == rhs.lookAwayCountdownSeconds
-            && lhs.blinkTimer == rhs.blinkTimer
-            && lhs.postureTimer == rhs.postureTimer
-            && lhs.userTimers == rhs.userTimers
-            && lhs.subtleReminderSize == rhs.subtleReminderSize
-            && lhs.hasCompletedOnboarding == rhs.hasCompletedOnboarding
-            && lhs.launchAtLogin == rhs.launchAtLogin
-            && lhs.playSounds == rhs.playSounds
-            && lhs.isAppStoreVersion == rhs.isAppStoreVersion
-    }
-
-    // MARK: - Custom Codable Implementation
-
-    enum CodingKeys: String, CodingKey {
-        case lookAwayTimer
-        case lookAwayCountdownSeconds
-        case blinkTimer
-        case postureTimer
-        case userTimers
-        case subtleReminderSize
-        case hasCompletedOnboarding
-        case launchAtLogin
-        case playSounds
-        // isAppStoreVersion is intentionally excluded from persistence
-    }
-
-    init(from decoder: Decoder) throws {
-        let container = try decoder.container(keyedBy: CodingKeys.self)
-        lookAwayTimer = try container.decode(TimerConfiguration.self, forKey: .lookAwayTimer)
-        lookAwayCountdownSeconds = try container.decode(Int.self, forKey: .lookAwayCountdownSeconds)
-        blinkTimer = try container.decode(TimerConfiguration.self, forKey: .blinkTimer)
-        postureTimer = try container.decode(TimerConfiguration.self, forKey: .postureTimer)
-        userTimers = try container.decode([UserTimer].self, forKey: .userTimers)
-        subtleReminderSize = try container.decode(ReminderSize.self, forKey: .subtleReminderSize)
-        hasCompletedOnboarding = try container.decode(Bool.self, forKey: .hasCompletedOnboarding)
-        launchAtLogin = try container.decode(Bool.self, forKey: .launchAtLogin)
-        playSounds = try container.decode(Bool.self, forKey: .playSounds)
-        // isAppStoreVersion is not persisted, will be set at launch
-        isAppStoreVersion = false
-    }
-
-    func encode(to encoder: Encoder) throws {
-        var container = encoder.container(keyedBy: CodingKeys.self)
-        try container.encode(lookAwayTimer, forKey: .lookAwayTimer)
-        try container.encode(lookAwayCountdownSeconds, forKey: .lookAwayCountdownSeconds)
-        try container.encode(blinkTimer, forKey: .blinkTimer)
-        try container.encode(postureTimer, forKey: .postureTimer)
-        try container.encode(userTimers, forKey: .userTimers)
-        try container.encode(subtleReminderSize, forKey: .subtleReminderSize)
-        try container.encode(hasCompletedOnboarding, forKey: .hasCompletedOnboarding)
-        try container.encode(launchAtLogin, forKey: .launchAtLogin)
-        try container.encode(playSounds, forKey: .playSounds)
-        // isAppStoreVersion is intentionally not persisted
-    }
 }

Gaze/Services/AppStoreDetector.swift

@@ -1,78 +0,0 @@
-//
-//  AppStoreDetector.swift
-//  Gaze
-//
-//  Created by Mike Freno on 1/10/26.
-//
-
-import Foundation
-import StoreKit
-
-enum AppStoreDetector {
-    /// Returns true if the app was downloaded from the Mac App Store.
-    ///
-    /// Uses StoreKit's AppTransaction API on macOS 15+ to verify if the app is an App Store version.
-    /// Falls back to a heuristic receipt check on macOS versions prior to 15.
-    ///
-    /// This method is asynchronous due to the use of StoreKit's async API.
-    static func isAppStoreVersion() async -> Bool {
-        #if DEBUG
-            return false
-        #else
-            if #available(macOS 15.0, *) {
-                do {
-                    let transaction = try await AppTransaction.shared
-                    return true
-                } catch {
-                    return false
-                }
-            } else {
-                // Fallback for older macOS: use legacy receipt check
-                
-                guard let receiptURL = Bundle.main.appStoreReceiptURL else {
-                    return false
-                }
-                
-                do {
-                    let fileExists = FileManager.default.fileExists(atPath: receiptURL.path)
-                    guard fileExists else {
-                        return false
-                    }
-                    
-                    guard let receiptData = try? Data(contentsOf: receiptURL),
-                        receiptData.count > 2
-                    else {
-                        return false
-                    }
-                    
-                    let bytes = [UInt8](receiptData.prefix(2))
-                    let isValid = bytes[0] == 0x30 && bytes[1] == 0x82
-                    return isValid
-                } catch {
-                    return false
-                }
-            }
-        #endif
-    }
-
-    /// Checks if the app is running in TestFlight.
-    ///
-    /// On macOS 15+, StoreKit does not expose a TestFlight receipt type.
-    /// This method returns false on macOS 15+ as a result.
-    /// On earlier versions, it checks for the presence of a "sandboxReceipt".
-    ///
-    /// This method is asynchronous for API consistency.
-    static func isTestFlight() async -> Bool {
-        #if DEBUG
-            return false
-        #else
-            if #available(macOS 15.0, *) {
-                // StoreKit does not expose TestFlight receipt type.
-                // As a workaround, fallback to legacy method if available, else return false.
-                return false  // No supported TestFlight check post-macOS 15
-            } else {
-                return Bundle.main.appStoreReceiptURL?.lastPathComponent == "sandboxReceipt"
-            }
-        #endif
-    }
-}

Gaze/Services/SettingsManager.swift

@@ -74,9 +74,6 @@ class SettingsManager: ObservableObject {
     /// Use this for critical save points like app termination or system sleep.
     func saveImmediately() {
         save()
-        // Cancel any pending debounced saves
-        saveCancellable?.cancel()
-        setupDebouncedSave()
     }
 
     func load() {
@@ -120,13 +117,4 @@ class SettingsManager: ObservableObject {
             preconditionFailure("Missing timer configuration mappings for: \(missing)")
         }
     }
-
-    /// Detects and caches the App Store version status.
-    /// This should be called once at app launch to avoid async checks throughout the app.
-    func detectAppStoreVersion() async {
-        let isAppStore = await AppStoreDetector.isAppStoreVersion()
-        await MainActor.run {
-            settings.isAppStoreVersion = isAppStore
-        }
-    }
 }

Gaze/Services/UpdateManager.swift

@@ -7,8 +7,9 @@
 
 import Combine
 import Foundation
+
 #if !APPSTORE
-import Sparkle
+    import Sparkle
 #endif
 
 @MainActor
@@ -16,9 +17,9 @@ class UpdateManager: NSObject, ObservableObject {
     static let shared = UpdateManager()
 
     #if !APPSTORE
-    private var updaterController: SPUStandardUpdaterController?
+        private var updaterController: SPUStandardUpdaterController?
-    private var automaticallyChecksObservation: NSKeyValueObservation?
+        private var automaticallyChecksObservation: NSKeyValueObservation?
-    private var lastCheckDateObservation: NSKeyValueObservation?
+        private var lastCheckDateObservation: NSKeyValueObservation?
     #endif
 
     @Published var automaticallyChecksForUpdates = false
@@ -27,58 +28,58 @@ class UpdateManager: NSObject, ObservableObject {
     private override init() {
         super.init()
         #if !APPSTORE
-        setupUpdater()
+            setupUpdater()
         #endif
     }
 
     #if !APPSTORE
-    private func setupUpdater() {
+        private func setupUpdater() {
-        updaterController = SPUStandardUpdaterController(
+            updaterController = SPUStandardUpdaterController(
-            startingUpdater: true,
+                startingUpdater: true,
-            updaterDelegate: nil,
+                updaterDelegate: nil,
-            userDriverDelegate: nil
+                userDriverDelegate: nil
-        )
+            )
 
-        guard let updater = updaterController?.updater else {
+            guard let updater = updaterController?.updater else {
-            return
+                return
-        }
+            }
 
-        automaticallyChecksObservation = updater.observe(
+            automaticallyChecksObservation = updater.observe(
-            \.automaticallyChecksForUpdates,
+                \.automaticallyChecksForUpdates,
-            options: [.new, .initial]
+                options: [.new, .initial]
-        ) { [weak self] _, change in
+            ) { [weak self] _, change in
-            guard let self = self, let newValue = change.newValue else { return }
+                guard let self = self, let newValue = change.newValue else { return }
-            Task { @MainActor in
+                Task { @MainActor in
-                self.automaticallyChecksForUpdates = newValue
+                    self.automaticallyChecksForUpdates = newValue
+                }
+            }
+
+            lastCheckDateObservation = updater.observe(
+                \.lastUpdateCheckDate,
+                options: [.new, .initial]
+            ) { [weak self] _, change in
+                guard let self = self else { return }
+                Task { @MainActor in
+                    self.lastUpdateCheckDate = change.newValue ?? nil
+                }
             }
         }
-        
-        lastCheckDateObservation = updater.observe(
-            \.lastUpdateCheckDate,
-            options: [.new, .initial]
-        ) { [weak self] _, change in
-            guard let self = self else { return }
-            Task { @MainActor in
-                self.lastUpdateCheckDate = change.newValue ?? nil
-            }
-        }
-    }
     #endif
 
     func checkForUpdates() {
         #if !APPSTORE
-        guard let updater = updaterController?.updater else {
+            guard let updater = updaterController?.updater else {
-            return
+                return
-        }
+            }
-        updater.checkForUpdates()
+            updater.checkForUpdates()
         #else
         #endif
     }
 
     deinit {
         #if !APPSTORE
-        automaticallyChecksObservation?.invalidate()
+            automaticallyChecksObservation?.invalidate()
-        lastCheckDateObservation?.invalidate()
+            lastCheckDateObservation?.invalidate()
         #endif
     }
 }

Gaze/Views/Containers/OnboardingContainerView.swift

@@ -123,10 +123,9 @@ struct OnboardingContainerView: View {
                 }
             }
         }
-
         .frame(
             minWidth: 1000,
-            minHeight: settingsManager.settings.isAppStoreVersion ? 700 : 900
+            minHeight: 700
         )
     }
 

Gaze/Views/Containers/SettingsWindowView.swift

@@ -80,7 +80,7 @@ struct SettingsWindowView: View {
         }
         .frame(
             minWidth: 750,
-            minHeight: settingsManager.settings.isAppStoreVersion ? 700 : 900
+            minHeight: 700
         )
         .onReceive(
             NotificationCenter.default.publisher(for: Notification.Name("SwitchToSettingsTab"))

Gaze/Views/Setup/GeneralSetupView.swift

@@ -55,34 +55,34 @@ struct GeneralSetupView: View {
                     .glassEffectIfAvailable(GlassStyle.regular, in: .rect(cornerRadius: 12))
 
                     // Software Updates Section
-                    if !settingsManager.settings.isAppStoreVersion {
+                    #if !APPSTORE
-                        HStack {
+                    HStack {
-                            VStack(alignment: .leading, spacing: 4) {
+                        VStack(alignment: .leading, spacing: 4) {
-                                Text("Software Updates")
+                            Text("Software Updates")
-                                    .font(.headline)
+                                .font(.headline)
 
-                                if let lastCheck = updateManager.lastUpdateCheckDate {
+                            if let lastCheck = updateManager.lastUpdateCheckDate {
-                                    Text("Last checked: \(lastCheck, style: .relative)")
+                                Text("Last checked: \(lastCheck, style: .relative)")
-                                        .font(.caption)
+                                    .font(.caption)
-                                        .foregroundColor(.secondary)
+                                    .foregroundColor(.secondary)
-                                        .italic()
+                                    .italic()
-                                } else {
+                            } else {
-                                    Text("Never checked for updates")
+                                Text("Never checked for updates")
-                                        .font(.caption)
+                                    .font(.caption)
-                                        .foregroundColor(.secondary)
+                                    .foregroundColor(.secondary)
-                                        .italic()
+                                    .italic()
-                                }
                             }
+                        }
 
-                            Spacer()
+                        Spacer()
 
-                            Button("Check for Updates Now") {
+                        Button("Check for Updates Now") {
-                                updateManager.checkForUpdates()
+                            updateManager.checkForUpdates()
-                            }
+                        }
-                            .buttonStyle(.bordered)
+                        .buttonStyle(.bordered)
 
-                            Toggle(
+                        Toggle(
-                                "Automatically check for updates",
+                            "Automatically check for updates",
                                 isOn: $updateManager.automaticallyChecksForUpdates
                             )
                             .labelsHidden()
@@ -90,7 +90,7 @@ struct GeneralSetupView: View {
                         }
                         .padding()
                         .glassEffectIfAvailable(GlassStyle.regular, in: .rect(cornerRadius: 12))
-                    }
+                    #endif
 
                     VStack(alignment: .leading, spacing: 12) {
                         Text("Subtle Reminder Size")
@@ -171,41 +171,41 @@ struct GeneralSetupView: View {
                             .contentShape(RoundedRectangle(cornerRadius: 10))
                         }
                         .buttonStyle(.plain)
-                        .glassEffectIfAvailable(
-                            GlassStyle.regular.interactive(), in: .rect(cornerRadius: 10))
-
-                        if !settingsManager.settings.isAppStoreVersion {
-                            Button(action: {
-                                if let url = URL(string: "https://buymeacoffee.com/mikefreno") {
-                                    NSWorkspace.shared.open(url)
-                                }
-                            }) {
-                                HStack {
-                                    Image(systemName: "cup.and.saucer.fill")
-                                        .font(.title3)
-                                        .foregroundColor(.brown)
-                                    VStack(alignment: .leading, spacing: 2) {
-                                        Text("Buy Me a Coffee")
-                                            .font(.subheadline)
-                                            .fontWeight(.semibold)
-                                        Text("Support development of Gaze")
-                                            .font(.caption)
-                                            .foregroundColor(.secondary)
-                                    }
-                                    Spacer()
-                                    Image(systemName: "arrow.up.right")
-                                        .font(.caption)
-                                }
-                                .padding()
-                                .frame(maxWidth: .infinity)
-                                .cornerRadius(10)
-                                .contentShape(RoundedRectangle(cornerRadius: 10))
-                            }
-                            .buttonStyle(.plain)
                             .glassEffectIfAvailable(
-                                GlassStyle.regular.tint(.orange).interactive(),
+                                GlassStyle.regular.interactive(), in: .rect(cornerRadius: 10))
-                                in: .rect(cornerRadius: 10))
+
+                        #if !APPSTORE
+                        Button(action: {
+                            if let url = URL(string: "https://buymeacoffee.com/mikefreno") {
+                                NSWorkspace.shared.open(url)
+                            }
+                        }) {
+                            HStack {
+                                Image(systemName: "cup.and.saucer.fill")
+                                    .font(.title3)
+                                    .foregroundColor(.brown)
+                                VStack(alignment: .leading, spacing: 2) {
+                                    Text("Buy Me a Coffee")
+                                        .font(.subheadline)
+                                        .fontWeight(.semibold)
+                                    Text("Support development of Gaze")
+                                        .font(.caption)
+                                        .foregroundColor(.secondary)
+                                }
+                                Spacer()
+                                Image(systemName: "arrow.up.right")
+                                    .font(.caption)
+                            }
+                            .padding()
+                            .frame(maxWidth: .infinity)
+                            .cornerRadius(10)
+                            .contentShape(RoundedRectangle(cornerRadius: 10))
                         }
+                        .buttonStyle(.plain)
+                        .glassEffectIfAvailable(
+                            GlassStyle.regular.tint(.orange).interactive(),
+                            in: .rect(cornerRadius: 10))
+                        #endif
                     }
                     .padding()
                 }

GazeTests/Services/AppStoreDetectorTests.swift

@@ -1,29 +0,0 @@
-//
-//  AppStoreDetectorTests.swift
-//  GazeTests
-//
-//  Created by Mike Freno on 1/10/26.
-//
-
-@testable import Gaze
-import Testing
-
-struct AppStoreDetectorTests {
-
-    @Test func isAppStoreVersionReturnsFalseInDebug() async {
-        // In test/debug builds, should always return false
-        #expect(await AppStoreDetector.isAppStoreVersion() == false)
-    }
-
-    @Test func isTestFlightReturnsFalseInDebug() async {
-        // In test/debug builds, should always return false
-        #expect(await AppStoreDetector.isTestFlight() == false)
-    }
-
-    @Test func receiptValidationHandlesMissingReceipt() async {
-        // When there's no receipt (development build), should return false
-        // This is implicitly tested by isAppStoreVersionReturnsFalseInDebug
-        // but we're documenting the expected behavior
-        #expect(await AppStoreDetector.isAppStoreVersion() == false)
-    }
-}

GazeTests/TimerEngineTests.swift

@@ -306,4 +306,106 @@ final class TimerEngineTests: XCTestCase {
         XCTAssertNil(timerEngine.timerStates[.builtIn(.blink)])
         XCTAssertNotNil(timerEngine.timerStates[.builtIn(.posture)])
     }
+    
+    func testMultipleReminderTypesCanTriggerSimultaneously() {
+        // Setup: Create a user timer with overlay type (focus-stealing)
+        let overlayTimer = UserTimer(
+            title: "Water Break",
+            type: .overlay,
+            timeOnScreenSeconds: 10,
+            intervalMinutes: 1,
+            message: "Drink water"
+        )
+        settingsManager.settings.userTimers = [overlayTimer]
+        
+        timerEngine.start()
+        
+        // Trigger an overlay reminder (look away or user timer overlay)
+        timerEngine.triggerReminder(for: .user(id: overlayTimer.id))
+        
+        // Verify overlay reminder is active
+        XCTAssertNotNil(timerEngine.activeReminder)
+        if case .userTimerTriggered(let timer) = timerEngine.activeReminder {
+            XCTAssertEqual(timer.id, overlayTimer.id)
+            XCTAssertEqual(timer.type, .overlay)
+        } else {
+            XCTFail("Expected userTimerTriggered with overlay type")
+        }
+        
+        // Verify the overlay timer is paused
+        XCTAssertTrue(timerEngine.isTimerPaused(.user(id: overlayTimer.id)))
+        
+        // Now trigger a subtle reminder (blink) while overlay is still active
+        let previousActiveReminder = timerEngine.activeReminder
+        timerEngine.triggerReminder(for: .builtIn(.blink))
+        
+        // The activeReminder should be replaced with the blink reminder
+        // This is expected behavior - TimerEngine only tracks one activeReminder
+        XCTAssertNotNil(timerEngine.activeReminder)
+        if case .blinkTriggered = timerEngine.activeReminder {
+            XCTAssertTrue(true)
+        } else {
+            XCTFail("Expected blinkTriggered reminder")
+        }
+        
+        // Both timers should be paused (the one that triggered their reminder)
+        XCTAssertTrue(timerEngine.isTimerPaused(.user(id: overlayTimer.id)))
+        XCTAssertTrue(timerEngine.isTimerPaused(.builtIn(.blink)))
+        
+        // The key insight: Even though TimerEngine only tracks one activeReminder,
+        // AppDelegate now tracks overlay and subtle windows separately, so both
+        // reminders can be displayed simultaneously without interference
+    }
+    
+    func testOverlayReminderDoesNotBlockSubtleReminders() {
+        // This test verifies the fix for the bug where a subtle reminder
+        // would cause an overlay reminder to get stuck
+        
+        // Setup overlay user timer
+        let overlayTimer = UserTimer(
+            title: "Stand Up",
+            type: .overlay,
+            timeOnScreenSeconds: 10,
+            intervalMinutes: 1
+        )
+        settingsManager.settings.userTimers = [overlayTimer]
+        settingsManager.settings.blinkTimer.enabled = true
+        settingsManager.settings.blinkTimer.intervalSeconds = 60
+        
+        timerEngine.start()
+        
+        // Trigger overlay reminder first
+        timerEngine.triggerReminder(for: .user(id: overlayTimer.id))
+        XCTAssertNotNil(timerEngine.activeReminder)
+        XCTAssertTrue(timerEngine.isTimerPaused(.user(id: overlayTimer.id)))
+        
+        // Trigger subtle reminder while overlay is active
+        timerEngine.triggerReminder(for: .builtIn(.blink))
+        
+        // The blink reminder should now be active
+        if case .blinkTriggered = timerEngine.activeReminder {
+            XCTAssertTrue(true)
+        } else {
+            XCTFail("Expected blinkTriggered reminder")
+        }
+        
+        // Both timers should be paused
+        XCTAssertTrue(timerEngine.isTimerPaused(.user(id: overlayTimer.id)))
+        XCTAssertTrue(timerEngine.isTimerPaused(.builtIn(.blink)))
+        
+        // Dismiss the blink reminder
+        timerEngine.dismissReminder()
+        
+        // After dismissing blink, the reminder should be cleared
+        XCTAssertNil(timerEngine.activeReminder)
+        
+        // Blink timer should be reset and resumed
+        XCTAssertFalse(timerEngine.isTimerPaused(.builtIn(.blink)))
+        XCTAssertEqual(timerEngine.timerStates[.builtIn(.blink)]?.remainingSeconds, 60)
+        
+        // The overlay timer should still be paused (user needs to dismiss it manually)
+        // Note: In the actual app, AppDelegate tracks this window separately and it
+        // remains visible even after the subtle reminder dismisses
+        XCTAssertTrue(timerEngine.isTimerPaused(.user(id: overlayTimer.id)))
+    }
 }