Bitmask does not communicate with any server other than the servers of the selected LEAP VPN provider.
The authors don't collect any data nor logs. Logs that are created don't leave the app's storage and are deleted by default with each new successful connection. They are only accessible in the app.
For the privacy policy of the LEAP VPN service you are using, please refer to the respective privacy policy.
The program and its components are under open-source licenses that allow you to use this app forever according to terms of the open-source licenses for details.
However, the author reserves the right to suspend development or stop publishing the app or updates to it at any time.