The app works 50%, after that full of errors, it is not ready to publish in Play Store, if you buy it you must know a lot about Java or hire a programmer to correct it, in the end it is a waste of time and money, I wrote to the developer in different ways, but in the mail if he saw my message but never responded, so do not waste your time and money, the project is currently useless, the developer does not respond, he is a scammer.