In order to quickly fix any problems that may come up while playing, this accessibility is essential. Safe Payment Methods. Players should also consider the app's payment optivideo buddyons; a good rummy app should support a number of safe payment methods to make deposits and withdrawals simple. The procedure for downloading & installing rummy apps is usually simple and differs slightly between iOS and Android devices. The first step for Android users is to go to the Google Play Store & type in the name of the rummy app they want.