Library Merger is a utility tool designed for iPhone users who study with JW Library on multiple devices. Developed by Andreas Skorczyk, this free app solves the problem of having two separate versions of your JW Library backups that cannot be easily combined.

With Library Merger, you can effortlessly merge two JW Library backups into one. Simply open both backups in the app, which can even be sent via AirDrop. The app will automatically merge the backups, resolving any conflicts such as duplicate bookmarks or overlapping markings. In case of conflicts, you can easily choose which version to keep.

The entire merging process, when done regularly, takes just a few seconds. This means you can quickly have a single merged backup that can be easily restored on all your devices.

It's worth noting that Library Merger is still in its early stages and is actively being developed. The app's code is open source and can be found on GitHub. If you encounter any bugs or have suggestions, you can directly contact the developer for assistance.