Grunda
Last updated: April 2026
Grunda is designed to be private by default. Your training data stays on your device. We do not collect personal information, we do not track you across apps or websites, and we do not sell data to third parties.
Grunda stores the following information locally on your device using Apple's SwiftData framework:
This data is not transmitted to our servers. Uninstalling Grunda removes all of it.
Grunda uses TelemetryDeck to understand how the app is used in aggregate (e.g., which workouts are popular, where users drop off in onboarding). TelemetryDeck is privacy-focused by design:
See TelemetryDeck's privacy policy for details.
Grunda uses Sentry to capture crash reports and fix bugs. Crash reports include device type, iOS version, and a stack trace. They do not include personally identifiable information or the contents of your training data.
If you subscribe to Grunda PRO, payments are processed entirely by Apple through the App Store. Subscription status is managed by RevenueCat, which stores an anonymous identifier tied to your Apple device. We do not receive or store your payment information.
If you enable reminders, Grunda schedules local notifications on your device. No notification content is transmitted to our servers โ all reminder logic runs locally.
Under GDPR and other applicable laws, you have the right to access, correct, or delete your personal data. Because Grunda stores training data locally on your device, you can delete it at any time from Settings โ Reset All Progress, or by uninstalling the app. For questions about data we may hold via TelemetryDeck, Sentry, or RevenueCat, contact us below.
Grunda is not directed at children under 13. We do not knowingly collect information from children.
If we update this policy, the revision date above will change. Material changes will be announced in the app.