Comparison

Libri Audiobooks vs Bukai

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • On-device neural voices
  • Instant listening
  • 45 languages, 150+ voices
  • Text & Web listening
  • Small, efficient voice packs
  • Full PDF & EPUB eReader
  • Sync across devices
Features
Read full description

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

About

Bukai

Features
Read full description

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

Libri Audiobooks4 screens
Bukai4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Libri Audiobooks ships an update weekly, Bukai every 6 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
Libri Audiobooks versus Bukai: the parameters behind the verdict, then further details
ParameterLibri AudiobooksBukai
PriceFree — better$4.99
Rating4.5 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyWeeklyEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.0
Further details — not scored
Size86 MB38 MB
Age rating4+4+
DeveloperNeuraCore Technologies社桥 郑

In-app purchases

3 purchases

Libri Audiobooks

Subscriptions3
  • Online Voices Monthly3 Days trial$3.991 Month
  • Narratorio$12.991 Month
  • Yearly Subscription3 Days trial$99.991 Year
None

Bukai

No in-app purchases

Questions

Is Libri Audiobooks free?
Libri Audiobooks is free to download, with in-app purchases available.
Is Bukai free?
Bukai costs $4.99, with no in-app purchases.
Do Libri Audiobooks or Bukai have ads?
Neither Libri Audiobooks nor Bukai shows ads.
Which is updated more often, Libri Audiobooks or Bukai?
Libri Audiobooks ships an update weekly, and Bukai every 6 days. Most recently, Libri Audiobooks was updated on October 7, 2026 and Bukai on October 10, 2026.

Other comparisons