Play Any Audiobook Format on iPhone
M4B, M4A, MP3, FLAC—BookJack handles them all. No conversion needed, just import and listen.
M4B
M4A
MP3
FLAC
Complete Format Support Details
M4B
M4B Format
Apple Audiobook Format
- ✓ Chapter markers & navigation
- ✓ Automatic bookmarking
- ✓ Embedded cover art & metadata
- ✓ Excellent compression (small files)
Best for: Complete audiobook collections
MP3
MP3 Format
Universal Audio Format
- ✓ Universal compatibility
- ✓ Wide availability
- ✓ Good compression
- ✓ ID3 tag support
Best for: Individual chapters or podcasts
M4A
M4A Format
Apple Audio Format
- ✓ Better quality than MP3
- ✓ Smaller file sizes
- ✓ iTunes compatible
- ✓ AAC encoding
Best for: Music or single-file audiobooks
FLAC
FLAC Format
Lossless Audio Format
- ✓ Lossless compression
- ✓ Perfect audio quality
- ✓ Open source format
- ⚠ Large file sizes
Best for: Audiophiles & archival
One App for All Your Audiobook Formats
Stop converting files. Import any format and start listening immediately.
