Sync is a free app that allows you to synchronize your iCloud calendar on your Android device. The app offers 2-way synchronization and connects directly to iCloud servers, without using any third-party servers. This means that all your data is stored in iCloud, and you can access other iCloud features such as notes and iCloud Drive from the built-in web browser. The app also offers background synchronization, multiple accounts and calendars, and the ability to create new calendars from the app itself. Setup only takes 4 steps, and calendars are synced to your default calendar on your phone or tablet.

It is important to note that synchronization is only supported for iCloud calendars, and an app-specific password has to be generated before logging in. The app-specific password can be generated without leaving the app. Any password or username entered within the app is stored on your physical device only and is used to log in directly to your iCloud account. The app also offers a tutorial to log in with 2-step verification.

Sync is a great option for those who want to keep their data stored in iCloud and do not want to transfer it to another service. It is also useful for those who may wish to switch to an iOS device in the future. With Sync, you can access all your iCloud data from your Android device for free, without any limitations.

In conclusion, Sync is a free app that allows you to synchronize your iCloud calendar on your Android device. The app offers 2-way synchronization, connects directly to iCloud servers, and offers background synchronization, multiple accounts and calendars, and the ability to create new calendars from the app itself. It is important to note that synchronization is only supported for iCloud calendars, and an app-specific password has to be generated before logging in. Sync is a great option for those who want to keep their data stored in iCloud and do not want to transfer it to another service.