Your play. Your choice.
Privacy information / September 23, 2026
Developed by Mercer Puzzle Co.
Puzzles and personal statistics
Puzzle progress, settings, and personal statistics are stored on your device. The iPhone app also keeps a local backup. Joining the leaderboard does not enable cloud puzzle saves. Removing the app or clearing website storage can remove this local data.
Optional online leaderboard
Browsing standings does not enroll you. When you join, the server creates a random profile and public nickname. Your nickname, game, difficulty, daily date, score, active time, and ranking are public. Your device stores a secret access token; the server stores only its hash. Do not share your device's application storage.
For eligible attempts, the app sends the puzzle identifier, final solution, timing, and hint count for validation. Solutions are processed to verify results, not published or stored in the leaderboard database. Pending submissions stay on your device until uploaded. The server retains profile and result records until you delete your online profile.
Use Leaderboard > Delete online profile to remove your profile and uploaded results. This does not delete your local saves or cancel an Apple subscription. The current profile is installation-specific, without email registration or cross-device account recovery.
Optional usage sharing
The separate usage-sharing switch in Settings is off unless you enable it. It shares game starts, results, active play time, hints, retries, app version, and platform under a random installation identifier. Shared analytics records are retained for up to 180 days. Settings includes a separate control to delete shared usage records.
Purchases
Apple processes iPhone subscription payments. Pocket Eureka! does not receive your payment card number. The app uses Apple's verified purchase information to determine Plus access. Use Restore purchases in Plus to recover access through your Apple account. Manage or cancel subscriptions in Apple's subscription settings.
Private family-testing codes are checked on your device. Redemption stores a signed complimentary-access pass with your local saves, not the code you typed. It does not send your code to analytics or the leaderboard, create a payment, or cancel an existing Apple subscription.
Connections and controls
Online features transmit data to the Pocket Eureka! service. Network addresses are processed to serve and rate-limit requests. Daily puzzle editions and software updates are checked when connected. Core downloaded puzzles can be played offline. No advertising SDK has been added for these features.
This is a private testing build. Final publisher contact details and the production hosting policy must be supplied before public launch.