Enter the “Settings” page below, click “Upgrade App”, an introduction of feature differences between the trial version and the upgraded version will appear. Click “Upgrade software at XX price” below to purchase the upgraded version. After successful purchase, “Purchased” will be displayed. Once purchased it lasts a lifetime.

There is no need to log in in the app, but in order to use the iCloud synchronization function, you need to log into the iCloud account in the iOS or Mac system. If you use multiple devices, you need to ensure that different devices log into same iCloud account to synchronize data between these devices.

No, as long as you login with same AppStore account, purchase on one device, and click “Restore Purchase” in “Upgrade App” page on other devices, you can use the upgraded version on all your devices.