Beta guide

This is a limited test version of a number-placement puzzle learning app. It uses a development service. Features may be unavailable while we investigate problems. This notice does not authorize an unannounced reset of your account or balance.

TestFlight purchases use Apple's sandbox. Google Play purchase tests require the invited Google account to be registered as a license tester. Use only a purchase sheet that identifies a no-charge test purchase. If it indicates a real charge, cancel and contact support.

A Google or Apple sign-in is required for hint purchases, daily free credits and new hint requests. Basic Practice is available to guests. Each newly acquired paid hint stage uses one credit; diagnostics use zero credits. Reopening the same acquired disclosure does not use another credit. Purchase does not automatically open a hint. Test purchases are not production purchases.

The current iOS beta may display USD product information while Apple's purchase sheet displays local currency. This difference is under investigation; we do not present it as a confirmed sandbox behavior or perform our own currency conversion. Report the displayed values and stop if the sheet does not clearly identify a free test purchase.