This is the iOS app which comes with two months of tasks and server access. Additional months can be purchased via in-app purchase (99¢ per month or a year for $8.99).
The app now includes the ability to sync between your devices, both Android and iOS – when you install the app you will be prompted to create an account. You will then install the app on your other devices and log in to the account you created. Your data will be shared between your devices!
Works on iPhone/iPad/iPod Touch. Requires iOS 5.1 or higher.