Audiobook Builder is a fine, long-standing Mac app. If you want an actively developed alternative that also fetches chapters from the internet, edits existing M4Bs without re-encoding, and reads a dozen audio formats — meet AudioBo.
60-minute export limit
ifun.de: “Moderne Alternative zu Klassikern wie dem Audiobook Builder.” Read the review →
AudioBo is the modern, actively developed Audiobook Builder alternative for Mac. Both apps do the same core job: take your audio files and build a chaptered M4B audiobook that behaves properly in Apple Books. Here is where they differ, feature by feature.
Audiobook Builder details come from the developer's site and Mac App Store listing (v2.2.9), checked in August 2026. If anything has changed since, trust the developer's own pages.
The biggest practical difference is what happens after you drop the files in. AudioBo can search Audible, Apple Books, MusicBrainz and Google Books and fill in the cover, book info and chapter names with one click — instead of typing chapter titles by hand. Its batch rename tools clean up messy chapter names automatically, including a regex mode with live preview for the truly cursed ones.
Here is Fetch Metadata doing exactly that — a broken, unlabeled book turning into a properly structured one, with cover, book details and chapter titles pulled from the internet (the full write-up is on the blog):
In the video: an audiobook that came in unlabeled — Fetch Metadata pulls the cover, book details and chapter titles from Audible and Apple Books, and the messy import becomes a properly structured book without manual cleanup.
The second difference is that AudioBo is also an editor, not just a builder. Open any M4B you already have — bought, built years ago, or made with another audiobook builder — and change its chapters, cover or metadata in place. The audio is never re-encoded, so it takes seconds and loses zero quality.
Or just watch it happen — a messy folder of audio files in, a clean, Apple-ready M4B out:
In the video: the full workflow — a messy folder of audio files dropped into AudioBo and bound into a clean, Apple-ready M4B audiobook, chapters, metadata and cover included.
Fairness matters: Audiobook Builder has been around far longer, and it supports macOS versions all the way back to OS X 10.11 El Capitan. If you're building audiobooks on a ten-year-old Mac, it may simply be the right tool. AudioBo requires macOS 14.6 or later.
The best way to decide is to try both: AudioBo's demo is free and limited only by a 60-minute export cap — see the full feature tour or read the step-by-step MP3 → M4B guide.
AudioBo. It's a modern, actively developed Mac app that does the same core job — turn a folder of audio files into a chaptered M4B audiobook — and goes further where it counts: it fetches chapters, covers and book info from Audible, Apple Books, MusicBrainz and Google Books, edits existing M4B files without re-encoding, and reads a dozen input formats. It holds a 4.9-star rating across 182 App Store ratings, was recommended by 9to5Mac and ifun.de, and ships updates monthly.
For the core job — turning a folder of audio files into a chaptered M4B audiobook — yes, and it adds things Audiobook Builder's product page doesn't mention: fetching chapters and covers from Audible, Apple Books, MusicBrainz and Google Books, editing existing M4B files without re-encoding, and a wider set of input formats including FLAC, OGG Vorbis, Opus and WavPack.
No. AudioBo works from your source audio files, and it can also open M4B files you've already built and edit their metadata, chapters and cover in place — without re-encoding the audio.
AudioBo requires macOS 14.6 or later. If you're on a much older Mac, Audiobook Builder supports systems back to OS X 10.11 — on vintage systems it may be the more practical choice.
Yes — there's a free demo with a 60-minute export limit and no time limit. The full version is a $9.99 one-time purchase on the Mac App Store; no subscription.
Yes. It builds single continuous M4B files of any length, and can also split a book into parts by duration or file size — including an iPod Compatibility mode that keeps parts under 12 hours at chapter boundaries.
182 App Store ratings across all countries — read the reviews
One purchase, no subscription — and a free demo with a 60-minute export limit if you'd rather try first. See the full feature tour or the changelog.
60-minute export limit