Comparison

Comma Reading App vs Liberotus

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

Head to head
About

Comma Reading App

This app offers a minimalist and private reading experience for EPUB and PDF files. It uses on-device AI for intelligent organization, chapter summaries, and text explanations, transforming your digital library into a beautiful, distraction-free collection.

Highlights
  • On-device AI for organization and summaries
  • Automatic book categorization
  • Chapter summaries and text explanations
  • Full-screen distraction-free reader
  • Customizable reading experience
  • Privacy-focused, no data collection
  • Import EPUB and PDF files
Features
Read full description

A beautiful home for your EPUBs & PDFs. Lifelike read-aloud voices, smart organisation, highlights & excerpts. All private, all on-device. Sync with Pro. Comma is a minimalist EPUB and PDF reader for people who value simplicity, privacy, and focus. Built with Apple's latest technologies, it turns your digital library into a beautiful, organised collection while staying out of the way when you read. Library - Import EPUB and PDF files with ease - Add free, public-domain books from Standard Ebooks, built right in - Smart categorisation and custom categories - Search by title or author - Immersive Library Explorer for browsing and discovery - Home Screen widget for the books you're reading Apple Intelligence - Automatic book categorisation - Chapter summaries for quick understanding - All processing happens on-device for complete privacy Reading - Clean, distraction-free reading experience - Multiple themes, fonts, and layout options - Paginated or scrolling reading modes - Automatic position saving - Highlights, notes, and full-text search - Save memorable passages to the Excerpts Wall - "More Info" sheet with cover, description, publisher, and page count Listen (Read Aloud) - Natural, expressive neural voices that run entirely on-device Six languages: English, French, German, Italian, Portuguese, and Spanish - Over 25 voices with previews, plus built-in system voices - Adjustable speed, and listening continues in the background Comma Pro (One-Time Purchase) - iCloud Sync across your Apple devices - Sync library, reading progress, highlights, notes, and excerpts - Offload books to save storage while keeping your reading data More Features - Long-press any cover for quick actions - Per-book reading preferences - Adaptive reading controls - Reading progress tracking - Duplicate detection - Optimised for iPhone and iPad Privacy First - No ads. No tracking. No accounts. Your library stays yours. Apple Intelligence features require iOS 18.2 or later and a supported device (iPhone 15 Pro or newer, or iPad with M1 chip or later). Unsupported devices use smart fallback categorisation while keeping full reading functionality. Neural Read Aloud voices download separately and require a recent device.

About

Liberotus

Access and read your self-hosted ebook collection from your Grimmory server. Enjoy a private, elegant reading experience with offline access and seamless progress syncing across devices.

Highlights
  • Connect to self-hosted Grimmory server
  • Browse entire ebook collection
  • Sync reading progress
  • Download books for offline reading
  • Fast metadata browsing and search
  • Support for large libraries
  • Privacy-first design
Read full description

Your library, everywhere. Liberotus is a beautifully designed, privacy-first ebook reader and library app built specifically for Grimmory. Connect directly to your self-hosted Grimmory server and access your entire ebook collection anywhere, with a fast, elegant experience designed for serious readers and collectors. Built for Grimmory Liberotus is a dedicated companion app for Grimmory, giving you a native mobile experience for browsing, organising, and reading your self-hosted ebook library. * Connect securely to your own Grimmory server * Browse your complete ebook collection * Sync reading progress across devices * Continue reading exactly where you left off * Download books for offline reading * Fast metadata browsing and search * Support for large personal libraries A modern ebook experience Designed with rich typography, fluid navigation, and a clean interface that keeps the focus on your books. * Beautiful library browsing * Custom collections and organisation * Powerful search across titles, authors, and series * Responsive performance optimised for large libraries * Comfortable reading experience built for long sessions Privacy first by design Your library should belong to you — not advertisers or analytics platforms. Liberotus is built around a privacy-focused philosophy: * No advertising * No invasive analytics * No third-party tracking SDKs * Optional user-generated diagnostics only * Apple-native crash reporting support * Your data stays under your control Because your books, reading habits, and library are personal. Self-hosted freedom Liberotus works with your own Grimmory installation, giving you full ownership of your ebook ecosystem while providing a polished native app experience on iPhone. Your library, everywhere. Privacy Policy: https://broadlyfine.com/liberotus/privacy/ Terns of Usde: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Comma Reading App4 screens
Liberotus4 screens

Verdict

The call

The clearest difference is in-app purchases: Liberotus at none against Comma Reading App's 1. On price, review sentiment, update cadence and ads 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. Comma Reading App sells 1 one-off in-app purchase. Liberotus asks for nothing beyond the download.

UpkeepUpdate frequency

Comma Reading App ships an update every 2 weeks, Liberotus every 9 days. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.

Scorecard1 real difference · 9 level
Comma Reading App versus Liberotus: the parameters behind the verdict, then further details
ParameterComma Reading AppLiberotus
PriceFreeFree
Rating—1.0 (1 ratings) — better
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad — betteriPhone
Requires iOS26.026.0
Further details — not scored
Size37 MB20 MB
Age rating4+4+
DeveloperSaleh KayyaliSteve James

Customer experience

Comma Reading App

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Liberotus

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Comma Reading App

One-time1
  • Comma Pro$2.99
None

Liberotus

No in-app purchases

Questions

Is Comma Reading App free?
Comma Reading App is free to download, with in-app purchases available.
Is Liberotus free?
Liberotus is free to download, with no in-app purchases.
Do Comma Reading App or Liberotus have ads?
Neither Comma Reading App nor Liberotus shows ads.
Which is updated more often, Comma Reading App or Liberotus?
Comma Reading App ships an update every 2 weeks, and Liberotus every 9 days. Most recently, Comma Reading App was updated on September 27, 2026 and Liberotus on September 23, 2026.

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