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DeviceActivityMonitor

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Reply to DeviceActivityMonitor - Callbacks not trigger
Hi, I've faced a unexpected behavior in my screen time app (AppStops) when using structured concurrency tools in non-isolated DeviceActivityMonitor class. This changes may solve your problems. Remove @MainActor from AppUsageManager Remove Task from your codes. I recommend you to use non-isolated types and methods for DeviceActivityCenter. I hope this helps.
Topic: App & System Services SubTopic: General Tags:
Jan ’25
DeviceActivityMonitor extension does not call back at the set time
Hello Apple development team, I have developed an App for screen time management, which mainly uses ScreenTimeAPI. Users can set certain Apps to be disabled during a certain period of time. After the App is released, users often report that the settings do not take effect as expected. I have seen many developers on the forum reporting that the DeviceActivityMonitor extension sometimes does not trigger callbacks. Based on this background, I have the following questions: Is it a known problem that the DeviceActivityMonitor extension sometimes does not trigger callbacks? If so, are there any means to avoid or reduce the probability of occurrence? In addition to being killed by the system when the running memory exceeds (I just called some ScreenTimeAPI and accessed UserDefaults in the extension, which should not exceed the running memory), under what other circumstances will the DeviceActivityMonitor extension be killed by the system? Will it automatically recover after being killed? W
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Jan ’25
DeviceActivityMonitor.intervalDidEnd never getting called
I'm trying to build an app with a DeviceActivityMonitor extension that executes some code after 15 minutes. I can confirm that the extension is set up correctly and that intervalDidStart is executed, but for some reason the intervalDidEnd method never gets called. What I'm doing in both is just registering a local notification. class DeviceActivityMonitorExtension: DeviceActivityMonitor { let store = ManagedSettingsStore() override func intervalDidStart(for activity: DeviceActivityName) { createPushNotification( title: Session activated!, body: ) super.intervalDidStart(for: activity) } override func intervalDidEnd(for activity: DeviceActivityName) { createPushNotification( title: Session ended, body: ) super.intervalDidEnd(for: activity) } private func createPushNotification(title: String, body: String) { let content = UNMutableNotificationContent() content.title = title content.body = body // Configure the recurring date. var dateComponents = Calendar.current.dateComponents([.era, .year,
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Feb ’25
Family Controls (Distribution) was granted to main bundle ID, but not to the extensions
I've successfully obtained Distribution entitlements for Family Controls. However, this seems to only apply to the main target/identifier and not the extensions, like DeviceActivityMonitor, ShieldConfigurationDataSource, or ShieldActionExtension. Did I perhaps fill out the form with the wrong bundle ID? If I go to Certificates, Identifiers & Profiles, my main identifier for the app has the Distribution entitlement. But the extensions and the wildcard don't. This means that trying to create an archive results in the following two errors, each repeated twice: Provisioning profile failed qualification (Profile doesn't support Family Controls (Development)) Provisioning profile failed qualification (Profile doesn't include the com.apple.developer.family-controls entitlement) Note that my entitlement files are set up correctly. Do I need to fill out the form with a wildcard instead? Or am I doing something wrong? Thank you.
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Feb ’25
Family Controls Approved for Main App but Not Extension – Blocking
Hi everyone, I’m developing a screen-time and focus app that uses Apple’s Family Controls framework to block distracting apps and reward users through a gamified experience. Apple approved Family Controls (Distribution) for the main app identifier, but they did not approve the required extension target (which implements DeviceActivityMonitor, required for the framework to function). Because of this, I can’t archive or upload the app to TestFlight — and I’ve been stuck in limbo for over 2 months. This is severely delaying my launch. The app works perfectly, but I can’t release it because the extension wasn’t included in the entitlement approval. Has anyone else run into this with Family Controls? Is there any known way to escalate or fast-track approval for additional app IDs or targets? Would really appreciate any help, advice, or hacks. 🙏 Thanks, Enzer
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Apr ’25
FamilyControls Entitlement Not Working for External TestFlight Testers
Hi all, I’ve run into a frustrating issue with the FamilyControls and DeviceActivityMonitor APIs. I’ve received official approval from Apple to use the com.apple.developer.family-controls entitlement (distribution), and I’ve added the entitlement to both my main app and the DeviceActivityMonitor extension. I’ve also ensured the correct App Group is configured for both targets. Everything works perfectly when I install the app on my own device as an internal TestFlight tester. App blocking works, the DeviceActivityMonitor extension runs as expected, and the apps selected by the user are correctly shielded. However, for external TestFlight testers, while they do receive the Screen Time permission prompt, and can select apps to block, nothing actually gets blocked. It appears that the DeviceActivityMonitor extension is not being triggered at all on their devices. I’ve verified the following: The entitlement is approved and visible in App Store Connect The build is approved for
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Apr ’25
Reshield apps after certain time?
So I have been working with the screen time api. however I still cant get it to work to reshield certain apps after a certain time because for example Dispatch Queue just gets terminated after a certain time. This is my code right now but the reshielding doesn't get called. Please help I have been working on this since weeks and weeks. import ManagedSettings import DeviceActivity import Foundation class ShieldActionExtension: ShieldActionDelegate { let store = ManagedSettingsStore() let center = DeviceActivityCenter() override func handle(action: ShieldAction, for application: ApplicationToken, completionHandler: @escaping (ShieldActionResponse) -> Void) { switch action { case .primaryButtonPressed: // Unshield the app store.shield.applications?.remove(application) // Encode and persist ApplicationToken if let encoded = try? PropertyListEncoder().encode([application]) { UserDefaults(suiteName: group.Organization.BrainRipe.cmonnow)?.set(encoded, forKey: StoredApplicationTokens) } let unshieldDurationMinutes
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May ’25
FamilyControls App Blocking Not Working for External TestFlight Testers
Hi everyone, I'm following up on this post I made earlier about an issue I'm having with FamilyControls and the DeviceActivityMonitor extension not working for external TestFlight testers. To briefly recap: I have official Apple approval for the com.apple.developer.family-controls entitlement (distribution) The entitlement is added to both my main app and the DeviceActivityMonitor extension The App Group is correctly configured for both targets On internal TestFlight builds, everything works as expected: app blocking works, the extension runs, and selected apps are shielded. On external TestFlight builds, users get the Screen Time permission prompt, can select apps to block, but nothing is blocked. Since that post, I submitted a Code Level Support request, and Apple asked me to file a bug report via Feedback Assistant. I did that almost a month ago. The only reply I’ve received since is that they can’t give a timeframe or guarantee it will be resolved. I'm stuck in limbo with no updates and
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May ’25
Screen Time API: How to map bundleIdentifier to ApplicationToken for DeviceActivityMonitor when FamilyActivitySelection.Application.bundleIdentifier is nil?
I'm using FamilyActivityPicker to get consent for app/category management, which returns a FamilyActivitySelection object. I serialize this FamilyActivitySelection object (just applicationTokens and categoryTokens) and pass it to my DeviceActivityMonitor extension via App Group UserDefaults. I am using the JSON encoder/decoder over PropertyList (though both seem to exhibit the same behavior). After inspecting the FamilyActivitySelection object immediately after it's returned by FamilyActivityPicker in the main app, the application.bundleIdentifier property is consistently nil for every Application object within selection.applications. Similarly, category.localizedDisplayName is nil for ActivityCategory objects. This happens whether Select All Apps is used or if apps/categories are selected individually. I understand that this is the intended behavior due to Apple's user privacy policies. I read on another post that my app can be provided with bundle identifiers and app names within Shield Configurati
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May ’25
DeviceActivityEvent will still execute even if the app is not in use
I use DeviceActivityCenter to monitor app usage. For DeviceActivityEvent, I set 30 events, and the threshold of each event increases by 2 minutes: var events: [DeviceActivityEvent.Name: DeviceActivityEvent] = [:] for index in 0..<30 { let threshold = (index == 29) ? DateComponents(hour: 1) : DateComponents(minute: (index + 1) * 2) let name = DeviceActivityEvent.Name((prefix)|(index)) events[name] = DeviceActivityEvent(applications: tokens, threshold: threshold) } After reaching the last DeviceActivityEvent, I will restart directly in DeviceActivityMonitor private func restartMonitoring(activity: DeviceActivityName) { let center = DeviceActivityCenter() let currentEvents = center.events(for: activity) do { try center.startMonitoring(activity, during: schedule, events: currentEvents) } catch { print(Fail: (error)) } } But I found that after restarting, DeviceActivityEvent will be automatically executed even if I don't use the app. My iOS version is 18.5
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Jun ’25
Provisioning Profiles Missing Family Controls Child Entitlements Despite Development Approval
Hello everyone, I'm facing a critical build issue related to Family Controls entitlements and would appreciate any insights or help from the community or Apple engineers. My Goal: I am trying to build and run my app on a physical device to test my DeviceActivityMonitor and ShieldConfigurationExtension. I have already been approved for the Family Controls (Development) entitlement. The Problem: When I try to build, Xcode fails with the following errors, preventing me from testing: For my DeviceActivityMonitor target: Provisioning profile ... doesn't include the com.apple.developer.deviceactivity entitlement. For my SOSAppShieldExtension target: Provisioning profile ... doesn't include the com.apple.developer.screen-time-api entitlement. The Core Evidence: This seems to be a server-side issue with how the provisioning profiles are generated. I have used the security cms -D -i command to inspect the downloaded .mobileprovision files. The inspection reveals that the profiles do contain the paren
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Aug ’25
Family Controls (Distribution) entitlement missing for Device Activity Monitor extension - blocking TestFlight distribution
Hi Apple Developer Community, I'm experiencing an issue with Family Controls entitlements for my iOS app that I'd like to discuss and see if others have encountered similar problems. Background: My app (BrightStart) uses Family Controls to help users build healthy morning routines by temporarily blocking distracting apps until they complete a sunlight exposure session. The core functionality relies on automatic time-based blocking (e.g., block social media apps from 6-8am daily). The Problem: I have Family Controls working perfectly in development builds, but I'm blocked from distributing via TestFlight due to entitlement issues with my Device Activity Monitor extension. Technical Details: Main app bundle ID: app.brightstart.app ✅ Has both Family Controls (Development) and Family Controls (Distribution) options available Extension bundle ID: app.brightstart.app.BrightStartMonitorExtension ❌ Only shows Family Controls (Development) - no Distribution option Error when archiving for TestFlight: ❌ Provisioning pr
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Aug ’25
Screen Time API, DeviceActivity, Family Controls, Entitlements, Provisioning Profile
Hello everyone, I'm hoping to find a solution for a critical issue that is blocking my app's submission to the App Store. My app uses the Screen Time API and therefore has a main app and a DeviceActivityMonitor extension. The main app has been successfully granted the Family Controls (Distribution) entitlement. However, the DeviceActivityMonitor extension is stuck with only the Family Controls (Development) entitlement. This mismatch causes my build to fail during the archive/distribution process with the error: Provisioning profile failed qualification. Profile doesn't support Family Controls (Development). This is a hard blocker, as the extension is a mandatory part of the API. I have already filled out the entitlement request form and also contacted Developer Support (Case #102666581576), who confirmed they could not assist and directed me here. My question is: What is the correct procedure to escalate or resolve the issue of a required extension not receiving the distribution-level Famil
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Aug ’25
DeviceActivityMonitor will automatically become invalid
I started monitoring using the following code: deviceActivityCenter.startMonitoring( DeviceActivityName(name), during: makeDailySchedule(), events: events ) Where: DeviceActivitySchedule( intervalStart: DateComponents(hour: 0, minute: 0), intervalEnd: DateComponents(hour: 23, minute: 59), repeats: true, warningTime: nil ) In DeviceActivityMonitor, I read and write data using UserDefaults and keep the logic minimal to ensure the size does not exceed 6MB. However, after a period of time, monitoring continues to fail. Why is this happening? How can I resolve this issue?
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Sep ’25
Screen Time differences between DeviceActivityMonitor and times shown in DeviceActivityReport
I am still struggling to nail down the screen time between monitoring and showing it in a DeviceActivityReport. It's always off by a couple of percentage points, which results in a difference of a couple of minutes between the time shown for my total screen time in DeviceActivityReport and DeviceActivityMonitor with a threshold set for all apps/websites/categories. In the report, I am looping through all segment (there is only 1 segement using .daily segment interval for a given day) then loop through all categories and all apps within each category and sum up all totalActivityDuration for each app. Based on avaiable documentation, that should corrolate to DeviceActivityMonitor threshold but it doesn't. Are there any differences in how these 2 places count screen time? Are there any apps/core ios services which are excluded from DeviceActivityMonitor. Would appreciate any help at all, I'm losing my mind here. My current suspicion is that Apple Developer documentation is counted twic
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Sep ’25