Fitness Challenge · Last updated: September 10, 2026
Fitness Challenge ("the App") is a mobile application that allows groups of friends to compete in fitness challenges using health data from Apple HealthKit (iOS) and Google Health Connect (Android). Your privacy is important to us. This policy explains what data we collect, how we use it, and your rights.
| Data Type | Purpose | Storage |
|---|---|---|
| Display Name & Profile Picture | Shown to group members on leaderboards and in chat. You can customize your display name and upload an optional avatar/profile photo. | Device & Server Storage |
| Apple & Google Sign-In Information | Optional. Name, Email, and user identifiers (Apple ID or Google Account) used to secure your account, enabling seamless backup, syncing, and recovery. | Server |
| Health Data (HealthKit & Health Connect) Read-only | Steps, distance, flights climbed, and active calories for challenge tracking | Server (aggregated daily values only) |
| Camera Access | Optional. Used locally on your device to take a profile photo or scan QR codes to join groups. No video feeds or recordings are stored or transmitted. | Local Device Only |
| Photo Library Access | Optional. Used solely when you choose to select a custom profile picture from your photo library. | Local Device & Server Storage (for selected avatar) |
| Subscription & In-App Purchases | Subscription status (Free / Fitness Challenge Plus), trial period details, and transaction receipt identifiers processed securely via Apple In-App Purchase and Google Play Billing. No payment card numbers are collected by us. | Server, Apple App Store & Google Play Store |
| Group Membership | Associates you with your challenge groups (up to 5) | Server |
| Chat Messages | Group chat content. Stored locally on your device; temporarily cached on the server for up to 7 days to sync messages if you go offline or sign in on a new device. | Device & Server (7-day cache) |
| Device Token | Required to send push notifications for challenge updates and rank changes. | Server (Securely stored) |
| Usage & Performance Info | Anonymized data used to monitor app stability and improve features. | Third-party Infrastructure Providers |
The App requests read-only access to specific health data types relevant to your active challenge (e.g., Step Count, Walking + Running Distance, Flights Climbed, Active Energy Burned, or Activity Rings):
In compliance with Apple's and Google's developer guidelines, health data is not used for any purpose other than providing the health and fitness functionality described above.
The App offers push notifications to keep you informed about challenge start/end times, rank changes on the leaderboard, and other group updates. We collect a unique device token from your phone to deliver these messages.
The App supports Anonymous Accounts, allowing you to create or join groups and participate in fitness challenges immediately without providing any personal information.
To prevent data loss and enable syncing across multiple devices, we recommend linking your account via Sign in with Apple (on iOS) or Google Sign-In (on Android). This securely associates your anonymous progress with your verified Apple or Google identity. Your authentication is securely managed by Apple and Google, and no passwords are ever created or stored on our servers.
The App includes a group chat feature that allows members of a challenge group to communicate with each other. To ensure a safe environment and verify age requirements, access to group chat is subject to the following rules:
The App features simulated AI opponents that you can add to group challenges to test your endurance. These AI characters generate walking activity simulated on our servers based on preset difficulty levels.
The App may request permission to access your device's Camera and Photo Library for the following specific features:
Server-side data is stored securely in hosted databases with strict security policies to ensure users can only access data associated with their groups. Communication between the App and the server is encrypted via HTTPS/TLS.
We use trusted third-party tools to help us maintain the reliability and usability of the App:
Data collected by these services is anonymized where possible and is used solely for technical improvement. We do not use these tools for cross-app tracking or advertising.
Your data is retained only for as long as you are a member of a group. You can leave a group at any time, which removes your membership and associated health logs. Admins can permanently delete a group, which removes all associated data for all members.
Chat Messages Retention: Chat messages are stored permanently in a local database on your device. On our backend servers, chat messages are cached temporarily for a maximum of 7 days to facilitate syncing for offline devices or new device sign-ins, after which they are permanently deleted from our servers.
You can permanently delete your account and all associated data directly within the App's Profile settings. This action is immediate and IRREVERSIBLE. You may also contact our support email below for manual deletion assistance.
We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated "Last updated" date. Continued use of the App after changes constitutes acceptance of the revised policy.
If you have questions or concerns about this Privacy Policy, please contact us at: