To get support, describe the issue in an email to

If you want to propose features or report errors use the Suggestion form.


Where can I learn more about terms of use? — Read our Terms of Use.

Do you collect any health data? — No, but we source your health statistics in the iOS "Health" app.

Where do you store my progress? — The progress is stored in your "Files" folder of the iCloud account. If you re-install the app it will automatically recover your progress from iCloud. But the progress do not synchronize between your different Apple devices.

Is the app localized? — Yes, you can pass YC in English or Russian languages.