Libri Audiobooks vs Bukai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Libri Audiobooks
This app offers an offline e-reader with on-device text-to-speech capabilities, allowing you to listen to books and articles anywhere. It supports multiple languages and voices, efficient storage, and includes a free catalog of public-domain works.
- On-device neural voices
- Instant listening
- 45 languages, 150+ voices
- Text & Web listening
- Small, efficient voice packs
- Full PDF & EPUB eReader
- Sync across devices
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Libri Audiobooks — eReader + Offline Text to Speech Libri Audiobooks is a full eReader with on-device neural voices, so you can read and listen anywhere on-demand: subways, commuting, flights, rural areas, school or areas with limited data or Wi-Fi. Change speed, switch languages on the fly, and keep storage free — one compact voice (~60 MB) powers all your books. No per-book audio downloads. Features you’ll love: • On-device neural voices — natural, private playback that stays on your device. • Instant listening — tap Play and start immediately with lightweight voice packs. • 45 languages · 150+ voices — switch voices and languages on the fly. • Text & Web listening — paste text or a URL to listen instantly; smarter article extraction preserves clean formatting, and you can save clips to your Library with a title. • Small voice packs (~60 MB) — efficient storage that scales across thousands of books. • Full eReader for PDF & EPUB — customize reading preferences, extended highlighting, search, bookmarks, and more. • Sync across devices — keep your library and settings in sync across iPhone and iPad. • Free Classics Catalog — add thousands of public-domain books right on your device. Why offline matters • Works without a connection (planes, subways, rural) • No need to download 300+ MB per audiobook — keep storage for your treasured photos • Saves data & storage: one voice pack is reused across thousands of books • Private by design: your text stays on your device *Title availability varies by region. Public-domain works only. Terms & Privacy Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Narratorio Terms of Use: https://www.neuracoretech.com/terms Privacy Policy: https://www.neuracoretech.com/policy
Bukai
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Bukai is a beautifully simple reader for EPUB and TXT—built for focus and powered by state-of-the-art, on-device AI that keeps every page personal. It uses a high-quality, self-developed parsing, layout, and rendering engine, with no dependency on any web browser. Why readers choose Bukai * EPUB & TXT support – Smooth reading for both formats, including very large TXT files with on-demand loading. * AI Read Aloud – Natural narration with 100+ voices, including American & British female voices and Chinese female & male voices. * AI Summaries – Clear, high-quality overviews of the current chapter or the entire book—great for grasping key ideas fast. * Privacy by design – All intelligence runs locally on the device. No account, no ads, no data collection. * Beautiful typography – Clean, uncluttered layouts that make long reading comfortable. * Sleep timer – Set playback to stop automatically. Made for focused reading * Minimal, elegant interface that puts the text first. * Fast, reliable performance from first page to last. The on-device advantage * Best-in-class AI features without sending content to servers—reading stays personal and secure, even offline. Start the next chapter with Bukai: a reader that respects attention, time, and privacy.
Screenshots
Verdict
The clearest difference is price: Libri Audiobooks at Free against Bukai's $4.99. Bukai's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Libri Audiobooks is free to download; Bukai costs $4.99 up front. Libri Audiobooks sells 3 in-app purchases, starting at $3.99 per month. Bukai asks for nothing beyond the download.
Libri Audiobooks ships an update weekly, Bukai every 6 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.
| Parameter | Libri Audiobooks | Bukai |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.5 (8 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Weekly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 86 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | NeuraCore Technologies | 社桥 郑 |
In-app purchases
Libri Audiobooks
- Online Voices Monthly3 Days trial$3.991 Month
- Narratorio$12.991 Month
- Yearly Subscription3 Days trial$99.991 Year
Bukai
No in-app purchases









