What is the mobile phone OS version that Maxi-Cash app support? March 25, 2019 04:02 Updated We support iOS version 10 and above and Android 6 (Marshmallow) and above. Related articles Can I use Maxi-Cash app while overseas? How do I register for iPayment account? Do I need an account to use the Maxi-Cash app? What else can I do besides paying interest on Maxi-Cash app? I have instalment payments due. What should I do?