Comparison

Libri Audiobooks vs Readmon

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

Readmon

Features
Read full description

Readmon reads the books you already own, out loud, in a voice that sounds like a person. On a night when your eyes are tired, or with your hands in the sink, the story keeps going. ■ Ten AI voices that sound like people Not a robot. Choose from five female and five male voices. Add a reading style that fits the text — novel, news — and Readmon remembers which voice you used for each book. The AI voices support 31 languages: English, Korean, Japanese, Arabic, Bulgarian, Czech, Danish, German, Greek, Spanish, Estonian, Finnish, French, Hindi, Croatian, Hungarian, Indonesian, Italian, Lithuanian, Latvian, Dutch, Polish, Portuguese, Romanian, Russian, Slovak, Slovenian, Swedish, Turkish, Ukrainian, Vietnamese. Languages not on this list cannot be read by the AI voices. Chinese is not on the list. If the language you read is not on the list, please do not buy the AI voices. You can listen in that language with the system voices built into iOS, and everything else in the app is free. Dialogue is read in a different voice from the narration. When lines run back and forth, two voices take turns, so it sounds like a conversation. ■ On your iPhone, with no internet The narration is generated entirely on your iPhone. It keeps working when the connection drops, and on a plane. You download a voice once. After that, no internet is needed. ■ The files you already have TXT, EPUB and PDF, and comics too. 7z, CBZ, CBR, ZIP and RAR all open. Bring books in from Calibre-Web, OPDS, WebDAV, Dropbox or OneDrive. PDFs and scanned books are recognized on the device and read aloud as well. ■ Comfortable while you read Sleep timer — it stops on its own if you fall asleep Lock screen controls — turn pages and pause without taking it out of your pocket Repeat a passage — go back over the part you missed Pronunciation dictionary — make names and unusual words sound the way you want Page-turn animation — pages that turn like paper ■ Not a subscription Buy the AI voices once and they stay yours. Nothing to cancel, nothing to pay again next month. Listen free for 30 minutes before you buy. Everything else works without buying anything.

Screenshots

Libri Audiobooks4 screens
Readmon4 screens

Verdict

The call

The clearest difference is ads: Libri Audiobooks at none against Readmon's shown. Libri Audiobooks also leads on iOS requirement (17.6 vs 26.0). On price, update cadence, in-app purchases and device support 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

Both are free to download. Libri Audiobooks sells 3 in-app purchases, starting at $3.99 per month and Readmon sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Libri Audiobooks ships an update weekly, Readmon fortnightly. Both last shipped on October 7, 2026.

Scorecard2 real differences · 8 level
Libri Audiobooks versus Readmon: the parameters behind the verdict, then further details
ParameterLibri AudiobooksReadmon
PriceFreeFree
Rating4.5 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyWeekly — betterFortnightly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better26.0
Further details — not scored
Size86 MB49 MB
Age rating4+4+
DeveloperNeuraCore TechnologiesMinhaeng Lee

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
2 purchases

Readmon

One-time2
  • Remove Ads$0.99
  • AI Voice Lifetime$5.99

Questions

Is Libri Audiobooks free?
Libri Audiobooks is free to download, with in-app purchases available.
Is Readmon free?
Readmon is free to download, with in-app purchases available.
Do Libri Audiobooks or Readmon have ads?
Readmon shows ads; Libri Audiobooks does not.
Which is updated more often, Libri Audiobooks or Readmon?
Libri Audiobooks ships an update weekly, and Readmon fortnightly. Most recently, Libri Audiobooks was updated on October 7, 2026 and Readmon on October 7, 2026.

Other comparisons