Privacy Policy

App: Whistle PRO
Effective date: October 12, 2026 · Last updated: October 23, 2026

This Privacy Policy explains how information is handled in Whistle PRO ("the app"), an Apple Watch and iPhone app and a Wear OS and Android app provided by Aiden Studio ("the developer"). The app has no developer server and no account system, and does not collect, transmit or sell personal data.

1. Information stored only on your devices

• Match records — match events, settings and presets are stored only on your watch and phone and are transferred only between those two devices (Apple WatchConnectivity on Apple devices, the Wearable Data Layer of Google Play services on Android devices).
• Health data — with your permission, heart rate and distance are recorded during a match. On Apple devices, heart rate, distance and active energy are read from HealthKit and stored in your match records, and your refereeing is saved to the Health app as a workout. On Android devices, they are measured with the Wear OS watch's heart-rate sensor and GPS and stored in your match records, and the phone writes an exercise session, heart rate, distance and the exercise route to Health Connect (write only; the app does not read any other Health Connect data). This data never leaves your devices and is not used for advertising or marketing.
• Location — when GPS recording is on, your route during a match is stored on device to compute the heatmap and sprints, and saved as the workout route in the Health app (Apple) or Health Connect (Android). You can turn it off in the app settings.

2. Maps

The map in match detail uses Apple Maps on Apple devices and Google Maps (Google Maps Platform) on Android devices. Loading map tiles is subject to the map provider's policy (Apple, Google); the developer receives no information from it.

3. Subscriptions

Payments are processed by the Apple App Store or Google Play. The developer does not collect or store payment details; the app stores only the subscription expiry date on your devices.

4. Backups

If you turn on device backups (iCloud or Google backup), the app's data on your phone may be included in them, under each platform's policies (Apple, Google).

5. Third parties

The developer does not share your information with third parties and the app contains no advertising or analytics SDKs.

6. Retention and deletion

All information stays on your devices until you delete it. Deleting the app deletes all data it stored. Workouts saved to the Health app or Health Connect can be deleted there, and health and location access can be revoked at any time in your device settings (on Android, including Health Connect settings).

7. Children

The app is not directed to children under 14 and does not collect their personal data.

8. Changes

This policy may be updated for legal or service changes; updates will be posted on this page.

9. Contact

Privacy contact: Kitae Kim (Aiden Studio)
Email: kkt6394@gmail.com