Amplenote checks for changes to your notes and updates those changes across all of your devices. We've built Amplenote from the ground up to eliminate the merge issues that other note-taking apps face as a result of having being built in the pre-mobile age.
Our goal is have notes sync reliably with no work on behalf of the user, and to remain well-supported even if you are working offline or with limited bandwidth.
The icon near the top right of the screen indicates Amplenote's current sync state. The sync states are defined as follows: