Here to help you keep practicing.
Questions about Rudimate, a purchase or a pattern? Email Sergey Karpov for support. If you are reporting a problem, include your iPhone model, iOS version and what happened.
Email supportTrial and purchases
How does the free trial work?
Start the 7-day free trial in the app to use all practice features. After seven days, a one-time purchase is required to continue. There is no subscription or automatic charge. Reinstalling the app or restoring purchases does not restart the trial.
I already unlocked Rudimate.
Use the same Apple Account you used for the purchase. If the purchase screen appears, tap Restore purchases. Your full-access purchase does not expire.
How do I redeem a free offer code?
On the purchase screen, tap Redeem code and follow Apple's instructions. You can also open the redemption link supplied with the code, including during an active trial. A valid Full access offer grants the same permanent unlock as a paid purchase.
Where are my saved patterns?
Patterns and settings are stored on your device. Deleting the app can remove that local data. Restoring purchases restores your entitlement, not deleted patterns.
Privacy policy
Last updated: November 1, 2026.
Rudimate is developed by Sergey Karpov. The app does not require a Rudimate account and does not include advertising or analytics tracking. The developer does not collect your drum patterns or app usage through the app.
Your saved patterns and settings are stored locally on your device. If you choose to share a pattern, it is sent to the app or recipient you select using the iOS share sheet.
Apple processes in-app purchases, restores and code redemption. Rudimate uses Apple-verified transactions to determine your trial dates and full-access entitlement. The developer does not receive your payment card details. Apple's handling of purchase information is described in Apple's privacy policy.
If you email support, your email address and the information in your message are used to respond to your request. This support website is hosted on GitHub Pages; GitHub may process technical information needed to serve it, as described in GitHub's privacy statement.
For questions about privacy, contact skarpovdeveloper@gmail.com.