Cairn
Turn your ebooks into slides you can read and listen to
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Read your ebooks in short sessions with narrated slides based on their chapters. Choose from four reading depths, generate on Mac, then sync through iCloud to keep reading on iPhone. The iPhone app includes The Art of War to try without an API key. Cairn is free and open source. Generating your own books requires a model provider, which may charge for usage.
PH · launched Nov 2, 2026 · 1 upvote (top 65%) · 0 views
Niche: ebook and reading apps · 190 launches, 18 in the last 7 days ▼ -33% · Explore this niche →
Category and tags
- Education
- Content generation
- B2C
- AI feature
- Commercial product
- Open Source
- Education
- GitHub
- Books
Visit website ↗ Source listing ↗
More like this: all 190 launches in ebook and reading apps →
Could you build this?
Yes The app turns chapters into narrated slides by calling an LLM and a TTS API, then syncs through iCloud. A Mac and iOS app with CloudKit sync is more involved than a web app but is standard Apple-platform work.
Competitors
Other products that read as similar to this one : 292 launches clear the similarity bar, closest 8 shown.
Attention rank: #139 of 293 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 323 days after the earliest competitor.
- I built an iOS app that turns EPUBs into audiobooks · hn · 2026-02-24 · 6 upvotes · similarity 0.52
- Liber: Home Library Catalog · ph · 2026-11-04 · 2 upvotes · similarity 0.51
- Liburu · ph · 2026-10-06 · 1 upvotes · similarity 0.50
- SnowReader · ph · 2026-09-09 · 2 upvotes · similarity 0.50
- Opal Reader · ph · 2026-11-03 · 3 upvotes · similarity 0.47
- Sandbook · ph · 2026-10-09 · 3 upvotes · similarity 0.47
- e-Reader · ph · 2026-11-11 · 1 upvotes · similarity 0.47
- Opal Reader · ph · 2026-11-10 · 184 upvotes · similarity 0.46
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.