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Library Merger

Library Merger

Keep your Libraries in sync

38 ratings
59 reviews
🔧 Utilities
📊 Productivity
Free

Details

  • Released
  • Updated
  • December 7, 2020
  • July 16, 2026

Features

Developer

Andreas Skorczyk
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Library Merger screenshot #1 for iPhone
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iphone
ipad
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About

Easily combine two JW Library backups into a single, unified version. Resolve conflicts by choosing which content to keep, ensuring your study materials are consistent across all your devices. This utility streamlines library management for users of JW Library.

✓Combine two JW Library backups
✓Resolve content conflicts
✓Restore merged backup to devices
✓Open backups via AirDrop
✓Open-source code
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+1

What's New in Library Merger

0.8.1

July 16, 2026

Fixed an issue that prevented some JW Library backups containing newer, larger document IDs from being imported. Thank you, Rodrigo, for reporting it!

User reviews

Most RecentHighest RatedLowest Rated

Indispensable

Well I have an iPhone, an iPad, a desktop computer and a laptop computer. I do most of my work on the iPhone and iPad so once I sync them I export the database to the desktop and laptop. It's great having everything INSYNC! Thank you!
hthomas950hthomas950

Beware

It’s good for merging files. But beware, it will delete your playlists. Also, for some reason if you keep your backups in Google Drive, you can select files. Works fine with one drive. But not Google Drive. I’ve never been able to figure out how to select the backup from Google Drive.. the files won’t let you select them.
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Larsh IntonticlesLarsh Intonticles

A must have app for JW Library users

I use my laptop, tablet, and phone in so many different situations that I often get out of sync on which device has my most current information. This app has been a lifesaver more than a few times. I will never delete it. Thank you for all the work you put into it, and please keep it updated, it is truly appreciated.
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Rusty BrushRusty Brush

Awesome work

Thanks for this app. Works amazingly well.
pvagluemanpvaglueman

Excelente app

Sería bueno que funcionara las listas de reproducción
AXTI SistemasAXTI Sistemas
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FAQ

What does the Library Merger app do?

The Library Merger app is designed to help users of JW Library synchronize their study materials across different devices. It allows you to combine two separate JW Library backups into a single, unified backup file. This ensures that your bookmarks, notes, and other library content are consistent regardless of which device you use.

How does the app handle conflicts between backups?

If the app detects a conflict, such as duplicate bookmarks or overlapping markings in the same location, it provides you with the option to choose which version of the content you want to keep. This manual resolution process ensures that you have full control over the final merged backup.

Is Library Merger a free app?

Yes, Library Merger is a free application. The description indicates that it is open source and available without cost to users. There are no in-app purchases or advertisements mentioned.

What devices is Library Merger compatible with?

While specific operating system compatibility is not detailed, the app is designed to work with JW Library backups. It mentions features like sending backups via AirDrop, suggesting compatibility with Apple devices. The core function is to merge backup files that can then be restored to your JW Library installation on your devices.

What are the main use cases for Library Merger?

The primary use case is for individuals who use JW Library on multiple devices, such as a phone and a tablet, and want to ensure their study notes, bookmarks, and highlights are identical on both. By regularly merging backups, users can maintain a single, up-to-date library, saving time and preventing data loss or duplication.