Privacy Policy

Last updated: June 21, 2026

Developer: WPSifero Dev — support@wpsifero.com

Mimir (“the App”) is an offline ambient sound application. This Privacy Policy explains how your information is handled when you use Mimir.

1. Information We Collect

1.1 Firebase Analytics & Crashlytics (Google LLC)

Mimir uses Firebase Analytics to understand how the app is used and improve the experience. The following non-personal, anonymized events may be collected:

Mimir uses Firebase Crashlytics to collect crash reports when the app unexpectedly closes. This includes device model, OS version, app version at crash time, and stack traces (technical crash data only — no personal content).

1.2 Firebase Cloud Messaging (FCM)

If you enable sleep reminders, Mimir uses Firebase Cloud Messaging to send local notifications. A push notification token is generated — an anonymous identifier used solely to deliver the reminder to your device.

1.3 Google AdMob

Mimir displays banner advertisements and interstitial ads served by Google AdMob. AdMob may use the device’s advertising identifier and cookies to serve personalized or non-personalized ads. Google’s advertising data practices are governed by Google’s Privacy Policy.

1.4 Local Data (Stored on Device Only)

Mimir stores the following data exclusively on your device using Isar, a local database. This data never leaves your device:

1.5 Audio & Permissions

Mimir plays bundled audio files from the device storage. The app does not access the microphone, camera, contacts, location, or any other sensitive hardware. The only permission requested is notifications (optional, for sleep reminders).

2. How We Use Information

PurposeData Used
Analytics & app improvementFirebase Analytics (anonymized usage data)
Crash reporting & stabilityFirebase Crashlytics (device info, stack traces)
Sleep reminder notificationsFCM token (anonymous)
AdvertisingGoogle AdMob (advertising ID, if available)
Core functionalityLocal database (favorites, sessions, settings — device only)

Mimir does not sell, rent, or trade any data. The app operates primarily offline.

3. Third-Party Services

Mimir integrates the following third-party services:

WPSifero Dev does not have access to personally identifiable data collected by these services.

4. Your Choices & Rights

Opt-out of Analytics: You can disable Firebase Analytics in the app settings. When disabled, no usage data is sent to Firebase.

Disable Ads: If you purchase a future ad-free version, AdMob will no longer collect data through Mimir.

Delete Local Data: Uninstalling Mimir permanently deletes all local data (favorites, sessions, settings). No backup is stored externally.

Notification Control: Enable or disable sleep reminders in Settings → Playback → Sleep reminders.

5. Children’s Privacy

Mimir is not directed at children under the age of 13. We do not knowingly collect personal information from children.

6. Data Security

Since Mimir is offline-first and stores user data only on the device, your information is protected by the device’s built-in security features. No user content is transmitted to or stored on external servers by WPSifero Dev.

7. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be reflected in-app and take effect immediately upon being posted.

8. Contact

WPSifero Dev
support@wpsifero.com