Support

Without a subscription the app runs code five times a day; theory questions are not limited at all. The counter resets at the end of the day, so tomorrow you have five runs again. The subscription removes the daily limit completely and starts with seven free days.

That is a different refusal. The daily limit holds until the end of the day, while a busy sandbox passes in a few seconds: someone else's code is running next to yours. Wait about five seconds and press run again.

Open Settings and tap Restore Purchases. The store returns the purchase to the app within seconds. If the levels stay locked, write to us and name the store and the email of the account you paid from.

Check the spam folder first: our letters come from a fresh domain, and mail services are careful with those. If it is not there either, write to us from the same address and we will confirm the account by hand.

The first two levels are free, along with five code runs a day. The subscription opens the remaining levels and removes the run limit; it starts with seven free days.

Yes. The whole course is stored in the app, so questions and tasks work offline. Running code and syncing progress between devices need a connection.

The final exam issues it: open Levels and scroll to the card at the bottom of the ladder. The certificate carries a QR code, and anyone can check it in a second without an account.

Settings, then Delete account. It removes the account and the progress stored on our side for good; purchases live in the store and are not affected.