ChapterForge
MP3 to M4B audiobook converter
Only for Mac
Free · In-App Purchases
Mac
Professional MP3 to M4B audiobook conversion. Rearrange, drop, customize metadata, queue batches. Built for creators who need control.
Transform Your MP3 Collections Into Professional Audiobooks
ChapterForge converts your MP3 files into chapter-based M4B audiobooks with complete metadata control. Built for macOS, it handles everything from simple folder imports to complex multi-file projects with professional precision.
Why ChapterForge?
Stop wrestling with command-line tools or settling for basic converters. ChapterForge brings studio-quality audiobook creation to your Mac with an interface that actually makes sense. Import a folder of MP3s, arrange chapters exactly how you want them, customize every metadata field, and export a polished M4B file ready for any audiobook player.
Smart Import & Organization
Drop in a folder of MP3 files and ChapterForge automatically extracts existing metadata, chapter titles, track numbers, and embedded artwork. The app intelligently organizes your files while preserving all the information you need. Add more files anytime, reorder chapters with drag and drop, and merge multiple projects into a single audiobook.
Metadata Control That Matters
Every field is editable. Title, artist, album, narrator, publisher, genre, year, language, ISBN, comments. Apply changes to individual chapters or copy metadata down to multiple selections at once. The bulk editing tools let you find and replace text, add prefixes or suffixes, and manage track numbers across entire projects without repetitive clicking.
Professional Conversion Engine
Under the hood sits a production-grade FFmpeg integration that preserves audio quality while adding proper chapter markers. Choose your bitrate (64-320 kbps or VBR), sample rate, and encoding quality. The converter handles large audiobooks without breaking a sweat, processing multiple chapters in parallel and showing real-time progress for every conversion.
Batch Processing Built In
Queue up multiple projects and let ChapterForge work through them automatically. Set priority levels for urgent conversions, pause the queue when you need resources, and track progress across all active jobs. The batch system runs conversions concurrently based on your hardware, converting up to four projects simultaneously.
Cover Art Integration
ChapterForge extracts embedded artwork from your MP3 files and embeds it directly into the final M4B file. Your audiobooks look professional in every player, complete with the original cover art from your source files.
Project Management
Save your work as projects and come back later. ChapterForge remembers your metadata edits, chapter order, output settings, and folder locations.
What You Can Do
Convert MP3 folders into chapter-based M4B audiobooks
Edit metadata for individual chapters or in bulk
Reorder chapters
Find and replace text across all chapter titles
Add prefixes or suffixes to multiple chapters at once
Copy common metadata (artist, album, narrator, etc.) across chapters
Extract and embed cover artwork automatically
Queue multiple projects for batch conversion
Set conversion priorities (high, normal, low)
Choose audio quality settings (bitrate, sample rate, VBR)
Monitor real-time conversion progress
Save projects and return to them later
Handle large audiobooks with dozens of chapters
Perfect For
Podcast producers creating audiobook versions of their shows. Authors packaging audio chapters for distribution. Audiobook collectors organizing their libraries. Anyone who needs professional M4B files without learning FFmpeg commands.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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The developer, OKGONZ, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Anoop Menon
- Size
- 257.7 MB
- Category
- Productivity
- Compatibility
Requires macOS 12.0 or later.
- Mac
Requires macOS 12.0 or later.
- Age Classification
4+
- 4+
- In-App Purchases
Yes
- Yearly Subscription $49.99
- Monthly Subscription $4.99
- FULL PRO Lifetime $59.99
- Copyright
- © Indie4Tune Software
