# AudioBo — macOS Audiobook Maker

## What AudioBo is

AudioBo is a native macOS application that converts audio files into M4B audiobooks with working chapters, editable metadata, and cover art. It is designed for users who want proper, bookmarkable audiobooks that work in Apple Books, on iPhone, iPad, classic iPods (iPod Classic, iPod Nano), and any modern M4B-compatible player.

The app is built and sold by OrsoLabs, a small Mac software studio based in Ukraine (contact: support@orsolabs.dev). AudioBo ships through the Mac App Store and as a demo DMG from the product page.

## Facts at a glance

- Product name: AudioBo
- Category: Audiobook converter / multimedia utility for macOS
- Platform: macOS 14.6 (Sonoma) or later — Apple Silicon and Intel
- Price: $12.99 (one-time purchase, Mac App Store)
- Demo: free download, 60-minute export limit
- Developer: OrsoLabs
- Product page: https://orsolabs.dev/audiobo
- Mac App Store: https://apps.apple.com/us/app/audiobo-audiobook-converter/id6754019673
- Privacy: runs entirely offline — no data collected, no uploads, no account
- Current version: 1.2.6 (released April 14, 2026)

## Supported input formats

MP3, M4A, M4B, AAC, FLAC, AIFF, WAV, OGG Vorbis, Opus, APE (Monkey's Audio), WMA, WavPack (WV).

## Output format

M4B — the standard audiobook container used by Apple Books. Supports chapters, embedded cover art, author/narrator/title/description metadata, and efficient AAC or HE-AAC encoding.

## Key features

- **Automatic chapter generation** from multiple source files, CUE sheets, or timestamp text files (including YouTube-style timestamps).
- **Metadata editor** with cover art drag-and-drop, author, title, series, genre (autocomplete), language (50 languages), description.
- **Fetch Metadata from the Internet** — search Audible (US, UK, Germany, France, Italy, Spain, Japan, India, Australia), Apple Books, MusicBrainz, and Google Books to fill in cover art and chapter names with one click. Toolbar shortcut: ⌘F.
- **Split into Parts** — split long audiobooks by duration or file size into multiple M4B files.
- **iPod Compatibility mode** — automatically splits books into parts ≤12 hours at chapter boundaries with codec settings optimized for 2007–2010 iPods.
- **Update Metadata Without Re-encoding** — edit chapters, cover, or book info and save back to the original file without transcoding. Works with M4B, M4A, MP3, FLAC, OGG, AIFF. Shortcut: ⌘U.
- **Batch Rename & Cleanup** — automatically cleans up messy chapter titles, removes Roman numerals, renumbers, highlights added text.
- **Export presets** — Apple Books, iPod Classic (iPod Compatibility), Custom (remembers your last settings).
- **Filename formats** — Author - Title, Title - Author, with series number, and more (six presets).
- **Bitrate control** — full range across AAC-LC, HE-AAC, and MP3; includes low-bitrate HE-AAC for speech-heavy content and up to 320 kbps stereo AAC for higher quality.
- **High sample rate support** — 44.1, 48, 88.2, 96 kHz for FLAC sources.
- **Drag-and-drop everywhere** — onto the main window, onto the Dock icon, or open from Finder via "Open With".
- **Full Undo/Redo** (⌘Z / ⇧⌘Z).
- **Localized** in multiple languages; language switching without restart.
- **Accessibility** — VoiceOver support; keyboard shortcuts for every action.

## Frequently asked questions

### Will AudioBo reduce audio quality?
AudioBo is designed to preserve quality wherever possible. If your source files are MP3 (lossy), they'll be re-encoded to AAC (also lossy), so there's minimal loss as with any conversion. The app never artificially upsamples quality. If your files are already in AAC with suitable parameters, AudioBo can copy them without re-encoding — 0% quality loss. Presets are tuned for transparent speech quality (e.g., 64 kbps mono often sounds identical to the original).

### Does it work with very long books?
Yes. AudioBo has no limits on audiobook length. You can create a single, continuous M4B file even for very long books, fully compatible with Apple Books on Mac and iPhone. For older devices, AudioBo can automatically split a book into parts at chapter boundaries — so listening remains seamless.

### Are vintage iPods supported?
Yes. AudioBo has a special "iPod Compatibility" mode that automatically splits long books into parts ≤12 hours (a requirement for iPod Classic and iPod Nano), aligns splits to chapter boundaries, and uses optimal codec settings for 2007–2010 devices. Your audiobooks will work great on both vintage iPods and the latest iPhones and Macs.

### Are my original files preserved?
Yes. AudioBo never modifies or deletes your source files. The app creates new M4B files in a folder you choose. Your original MP3s or other files remain untouched. You can select an output folder (e.g., "Converted Audiobooks") to keep everything organized.

### Does the app work offline?
Yes. AudioBo runs entirely on your Mac. No internet needed for conversion or metadata editing. No server uploads — your files stay local. The app doesn't collect or transmit your data. Internet is only needed for downloading updates, verifying the Mac App Store license, or using the optional Fetch Metadata feature.

### How much does AudioBo cost?
$12.99 as a one-time purchase on the Mac App Store. There is a free demo with a 60-minute export limit available from https://orsolabs.dev/audiobo.

### Does AudioBo support Apple Silicon?
Yes. AudioBo is a universal macOS app; it runs natively on both Apple Silicon (M1, M2, M3, M4, MacBook Neo) and Intel Macs, on macOS 14.6 and later.

## Tutorials and guides

- **How to Convert MP3 to M4B on Mac** — https://orsolabs.dev/blog/how-to-convert-mp3-to-m4b-on-mac/ — step-by-step conversion guide explaining why M4B is the right audiobook container and how to preserve chapters for Apple Books.
- **How to Add M4B Audiobooks to Apple Books on Mac** — https://orsolabs.dev/blog/how-to-add-m4b-to-apple-books-macos/ — import workflow and how to fix files that don't show up as audiobooks.
- **How to Add M4B Audiobooks to iPhone** — https://orsolabs.dev/blog/how-to-add-m4b-to-iphone/ — iCloud sync, Finder sync, and edge cases.
- **Add Chapters to Audiobooks From a Timestamp File** — https://orsolabs.dev/blog/how-to-use-youtube-timestamps-chapters/ — using YouTube-style timestamps and CUE files to add chapters to single-file audiobooks.
- **Fetch Audiobook Metadata and Chapters from Audible, Apple Books, and Google Books** — https://orsolabs.dev/blog/fetch-audiobook-metadata-and-chapters-from-audible-apple-books-google-books/ — one-click metadata and chapter import.

## Links

- Product page: https://orsolabs.dev/audiobo
- Mac App Store: https://apps.apple.com/us/app/audiobo-audiobook-converter/id6754019673
- Demo DMG: https://orsolabs.dev/assets/audiobo/AudioBo_Demo_1.4.2_b110.dmg
- Changelog: https://orsolabs.dev/audiobo/changelog
- Privacy Policy: https://orsolabs.dev/audiobo-privacy-policy
- Support: support@orsolabs.dev
- Studio: https://orsolabs.dev

## Other OrsoLabs apps

- Mochi Type — touch-typing tutor for macOS: https://orsolabs.dev/mochi-type
- FileBo — recent-files pop-up for macOS (panel above any app, Spotlight-based, works fully offline): https://orsolabs.dev/filebo
- Focusito — Pomodoro timer for macOS: https://orsolabs.dev/focusito
  - Pomodoro & focus timer guides (8 reference pages: Background Sounds and noise on a Mac, menu bar timers, lofi timers, how many pomodoros a day, 50/10 vs 25/5, when pomodoro fails, statistics, Forest on a Mac): https://orsolabs.dev/focusito/guides/