ReadAI Smart vs Parallèle Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReadAI Smart
Read full descriptionHide full description
ReadAI is a smart book reader built for people who want more than just a reading app. Upload your own PDF, EPUB, and FB2 books, read in a clean and comfortable interface, and use AI tools right inside the book. Translate difficult passages, ask questions about what you are reading, listen to text and words, save useful quotes, and build your personal vocabulary as you go. ReadAI helps you stay inside the reading flow while understanding more, remembering more, and coming back to important parts later. Why readers choose ReadAI: • Read your own books in PDF, EPUB, and FB2 • Translate paragraphs and selected text instantly • Ask AI questions about the book while you read • Listen to text and vocabulary with audio support • Save new words to your personal dictionary • Review vocabulary with flashcards and associations • Highlight quotes and keep notes in one place • Search across your books and library • Track reading progress and activity ReadAI is a great fit if you: • Read in English or other languages • Want to combine reading with vocabulary learning • Need one app for reading, translation, and study • Prefer listening to text when a passage feels difficult • Want to save words, notes, and quotes without switching between apps Instead of jumping between an ebook reader, translator, dictionary, notes app, and AI assistant, you get everything in one focused reading experience. Use ReadAI to read with more confidence, understand more of every page, and turn everyday reading into steady learning. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Parallèle Reader
Read full descriptionHide full description
Read the books you love - and, whenever you like, read them in two languages, side by side. Parallèle Reader is a calm, aesthetic everyday reader for your books. It also has a language companion built in: open a book in its original language and a clean translation appears right beside it - there when you need it, out of the way when you don't. FEATURES - Read your own EPUB, PDF, and text files (five timeless classics included free, in their original languages) - Side-by-side bilingual reading in split screen — original and translation, page by page - Translate offline with Apple's on-device engine — no internet needed once your languages are downloaded, or connect your own DeepL key - Hide the translation and reveal it with a tap to test yourself - Long-press any word or passage to look it up, highlight it, add a note, or save it - A personal vocabulary that builds as you read — export it as a TSV file - Highlight in five colors, add notes, and bookmark pages — all organized by book - Reading stats with a heatmap that turns your daily progress into a streak — minutes read, books finished, and more - iCloud sync keeps your reading position, highlights, and vocabulary together across iPhone and iPad - Collections and smart shelves for Favorites and Finished, plus search by title, author, or language - Four reading themes (Warm Paper, Sepia, Light, Dark) - Classic serif fonts, adjustable size, spacing, and margins, and a focus mode WHO IT'S FOR You just love reading — a distraction-free reader for your own library, with stats that make the habit stick. Language learners — read authentic books instead of exercises; reading in context teaches what flashcards can't. Heritage and bilingual readers — move freely between both your languages on every page. Anyone after a book that was never translated for sale — read the original with a translation alongside. HOW IT WORKS Open one of the included classics, or import your own EPUB, PDF, or text file. In split screen, the original and a clean translation appear side by side, page by page — on your device with Apple Translate, or through your own DeepL key. Long-press a word or passage to look it up, highlight it, add a note, or save it to your vocabulary. Prefer to test yourself? Hide the translation and reveal it with a tap. PRICING Try Parallèle Reader free for 7 days. After the trial, a single one-time purchase unlocks the full app. PRIVACY Your reading stays private. iCloud sync is optional and connects only your own devices through your Apple ID — your reading habits never reach our servers. Translate entirely on-device with Apple Translate, and if you add a DeepL key, it's stored securely on your device. Whether you're rereading an old favorite or finally reading that novel in its original language, Parallèle Reader makes reading feel good — and quietly makes you better at it.
Screenshots
Verdict
The clearest difference is update cadence: ReadAI Smart at fortnightly against Parallèle Reader's every 3 months. ReadAI Smart also leads on iOS requirement (16.6 vs 18.6). On price, ads, 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
Both are free to download. ReadAI Smart sells 2 in-app purchases, starting at $6.99 per month and Parallèle Reader sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ReadAI Smart ships an update fortnightly, Parallèle Reader every 3 months. The most recent releases landed on September 13, 2026 and September 22, 2026 respectively.
| Parameter | ReadAI Smart | Parallèle Reader |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 55 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Vladislav Condratiev | Temirlan Abdyldaev |
In-app purchases
ReadAI Smart
- Base Monthly$6.991 Month
- Pro Yearly$49.991 Year
Parallèle Reader
- Unlock Parallèle Reader$9.99
Questions
Is ReadAI Smart free?
Is Parallèle Reader free?
Do ReadAI Smart or Parallèle Reader have ads?
Which is updated more often, ReadAI Smart or Parallèle Reader?
Other comparisons















