Comparison

JustReader vs Reader AI

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

Head to head
About

JustReader

A free, native reader for Mac, iPad, and iPhone that supports various file formats. It offers a customizable reading experience with multiple themes, fonts, and scroll options, plus on-device translation and no ads or tracking.

Highlights
  • Supports EPUB, FB2, MOBI, HTML, TXT, RTF, DOC/DOCX
  • Customizable themes, typefaces, and palettes
  • Continuous scroll, paged, or two-page spread
  • On-device translation
  • Chapter navigation and in-book search
  • No ads or tracking
Read full description

JustReader is a free, native reader for Mac, iPad, and iPhone. Open a book file and read it the way it should look — one book at a time, no library to manage, no account, no ads. OPENS WHAT YOU HAVE EPUB, FB2, MOBI, AZW3, PDF, Markdown, HTML, TXT, RTF and DOC/DOCX (on the Mac), including inside ZIP and RAR archives. Chapters, footnotes and pictures come through, and the app works out the encoding by itself. Manga and comics in CBZ and CBR open as two-page spreads, and Japanese manga reads right to left. Chinese and Japanese books open too, old encodings like GB18030 and Shift_JIS included. Furigana sits above the kanji. THE FULL READING EXPERIENCE Nine typefaces and 41 themes across five palettes, plus Typewriter and Terminal. Continuous scroll, paged, or two-page spread. Real hyphenation in Latin, Cyrillic, CJK, Arabic, and Greek. Read Aloud with word-by-word highlighting. On-device translation — nothing leaves your device. Chapter navigation, in-book search, an image gallery, and a fullscreen mode with multiple clock styles. PRIVATE BY DEFAULT No analytics, no telemetry, no tracking, no ads. Files stay on your device. WANT YOUR LIBRARY TO FOLLOW YOU? ContinuousReader is the full version: an iCloud-synced library with your reading position to the exact paragraph on every device, bookmarks and notes, OPDS catalogs, reading statistics, folders, and more. Free.

About

Reader AI

This AI-powered reader helps you understand books by providing contextual word definitions, sentence explanations, and passage summaries. You can also chat with AI about the content, convert books to audiobooks, and save new vocabulary.

Highlights
  • Contextual word definitions
  • AI sentence and passage explanations
  • Book chat with AI
  • Convert books to audiobooks
  • Learning notebook for vocabulary
  • Import various book formats
  • PDF annotation
Features
Read full description

Read books and web articles in their original language, with help when you need it. Reader AI brings reading, language learning and listening together. Import your own books or save an article from a link or the Safari share sheet, then read it in a layout you can make your own. READ AND UNDERSTAND Look up words in context and ask AI to explain sentences, expressions and passages. Set your native language and proficiency level for explanations that fit you. Ask questions about a book, follow answers back to cited passages, or get an AI summary of the whole book or what you have read so far. LISTEN AND FOLLOW ALONG Pro includes narration and translated subtitles. Follow the highlighted text while listening, change voices, or switch between the reader and player without losing your place. Free users can preview 45 seconds per book. Supported voices generate speech on your device after you download a voice pack; other available voices use online narration. In mainland China, narration is available only for languages supported on the device. PDFs with selectable text can be narrated too. BUILD YOUR LIBRARY Import EPUB, TXT, MOBI, AZW3, PDF and other supported formats. Keep books and articles together, or filter them separately. Browse your WebDAV library or OPDS catalog, search available titles and import what you want to read. Dropbox, OneDrive, Box, Google Drive imports and the Discover book catalog are available outside mainland China. Add books you come across to Want to Read and find them in your library sources later. Organize articles into folders. MAKE READING YOUR OWN Adjust fonts, spacing and colors, choose a page-turning effect, and use an external keyboard for reading and playback controls. Highlight passages, add notes, annotate PDFs and export them with annotations. Scanned PDFs need selectable text for word lookup. REMEMBER WHAT YOU READ Save words, expressions and sentences in Saved, along with their meanings and the original sentence. Review them, track your progress and return to the original passage. Pro also includes Book Chat, AI Summary and Similar Books. FREE READING AND PRO Reading, highlighting, notes and PDF annotation are free. The free library holds up to 3 books or articles in total. A one-time No bookshelf limit purchase or Pro removes this limit. Free AI credits let you try word lookup and explanations; Pro is required after they run out. Pro includes word lookup, explanations, pronunciation, Book Chat, AI Summary, Similar Books, narration and subtitle translation. Narration and subtitles no longer require separate credit purchases. Available subscription plans and prices are shown in the app. NO APP ACCOUNT REQUIRED Your library, reading progress and study data are primarily stored on your device and in your personal iCloud storage. AI features process the requested text and necessary context. Online narration sends text in segments to generate speech. Article text and images are extracted on your device. AI output may contain errors. Only import content you have the right to use. Requires iOS 18 or later. Payment is charged to your Apple Account when you confirm a purchase. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel subscriptions in your Apple Account settings and restore purchases in the app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://reader.lorpaves.com/privacy/ Terms of Service: https://reader.lorpaves.com/terms/

Screenshots

JustReader4 screens
Reader AI4 screens

Verdict

The call

The clearest difference is review sentiment: JustReader at 50% against Reader AI's 0%. JustReader also leads on in-app purchases (none vs 7). Reader AI's advantage is update cadence (every 5 days vs every 2 weeks). On price, 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

Both are free to download. Reader AI sells 7 in-app purchases, starting at $6.99 per month. JustReader asks for nothing beyond the download.

UpkeepUpdate frequency

JustReader ships an update every 2 weeks, Reader AI every 5 days. Both last shipped on October 31, 2026.

Scorecard4 real differences · 6 level
JustReader versus Reader AI: the parameters behind the verdict, then further details
ParameterJustReaderReader AI
PriceFreeFree
Rating—2.0 (1 ratings) — better
Positive reviews50.0% of reviews — better0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size21 MB63 MB
Age rating4+12+
DeveloperOleksii Koshkin江 刘

Customer experience

JustReader

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Reader AI

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

In-app purchases

None

JustReader

No in-app purchases

7 purchases

Reader AI

Subscriptions3
  • Monthly$6.991 Month
  • Quarterly$19.993 Months
  • Yearly7 Days trial$69.991 Year
One-time4
  • 100 points$9.99
  • No bookshelf limit$9.99
  • 300 points$29.99
Show 1 more
  • 1000 points$89.99

Questions

Is JustReader free?
JustReader is free to download, with no in-app purchases.
Is Reader AI free?
Reader AI is free to download, with in-app purchases available.
Do JustReader or Reader AI have ads?
Neither JustReader nor Reader AI shows ads.
Which is updated more often, JustReader or Reader AI?
JustReader ships an update every 2 weeks, and Reader AI every 5 days. Most recently, JustReader was updated on October 31, 2026 and Reader AI on October 31, 2026.

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