Kinfount ("the App") lets you request deletion of your account and all associated data at any time. This page explains how, and exactly what gets deleted.
Email vitaly@gavrilov.cc from any address, stating the phone number the account is registered under and asking for account deletion. We reply and confirm deletion within 7 days.
Because the app never verifies phone numbers by SMS, we cannot verify a deletion request against phone-number ownership by itself — if we have any doubt, we may ask a follow-up question before deleting.
All of this is removed permanently from the server. There is nothing left to delete elsewhere: as described in the Privacy Policy, the server never stores message content, contact lists, or analytics data in the first place — it only ever holds what is listed above, and only until you either read your messages or delete your account.
Data on your own device (local message history, media, backups you created) is controlled by you — deleting the account does not touch a device you keep, and uninstalling the app removes it, as with any Android app.
This page applies to the Kinfount messenger application for Android. See also the Privacy Policy.