Privacy Policy
Last updated: June 2026
What we collect
Anonymous players (web / iOS / Android): a one-way device fingerprint used only as an account identifier — no name, phone number, or other identity info is collected. Third-party login users (Google / Facebook): the user ID returned by that platform and whatever nickname / avatar you authorize; an email address is used only to generate a default nickname and is not stored. WeChat Mini Program players: the openid returned by WeChat login and whatever nickname / avatar you authorize. iOS app users: if you grant App Tracking Transparency (ATT) permission, the advertising identifier (IDFA) will be used by the Google AdMob SDK for ad personalization; if you decline, only non-personalized ads are shown.
Camera access
The iOS / Android app requests camera access to scan QR codes in the battle invite feature. The camera is activated only when you initiate a scan; no images or video are captured in the background.
Advertising
The app includes Google AdMob rewarded ads (used for features such as reviving a run). AdMob may show personalized ads based on device information and the advertising identifier. You can withdraw ATT consent at any time in system settings. We do not sell or share your game data with any ad network.
How we use it
To save your best score, let you join leaderboards and the daily challenge, and to compute anonymized activity/retention metrics that help us improve the game. We do not use it for ad profiling or sell it to third parties.
Game results & analytics events
Submitted run results update your best score and the leaderboards. Behavioral analytics events (e.g. game start/end) are used for product analysis only; raw event detail is auto-deleted after 30 days, leaving only anonymized aggregates.
Your choices
You can request account and data deletion at any time via the Delete Account page. We never require third-party login just to play.
Data retention
Account data is kept while the account is active; anonymous accounts inactive for 180 days may be purged. Raw analytics events are deleted after 30 days; only aggregated metrics are retained. Ad attribution data is managed by AdMob under its own privacy policy.
Contact us
Questions about this policy can be sent through the in-app feedback screen or by email to [email protected].