Prismatext vs RidoBooks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prismatext
Effortlessly learn a new language by reading books. This app blends foreign words and phrases into literature, allowing for context-based vocabulary acquisition and natural grammar rule learning. Adjust the learning pace and density to suit your level, from beginner to advanced.
- Blended-language reading (Diglot Weave)
- Context-based vocabulary acquisition
- Adjustable learning density
- In-app definitions and pronunciation
- Progress tracking
- Offline reading
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Learning a language is hard. Studying a foreign language requires hundreds or thousands of hours, and everyone is busy. Prismatext offers the first effortless method for learning a language: blended-language reading! Now an hour spent reading is an hour spent learning. Using a science-backed method called "Diglot Weave", Prismatext books blend the most useful foreign words and phrases into modern and classic literature for context-based language learning. Prismatext translates more and more of the book you're reading into your target language. This allows the reader to naturally acquire new foreign vocabulary and grammatical rules. See phrases used in-context for improved recall. Repetition and incremental phrase addition allow you to easily learn new words at your desired pace - you can adjust the density at will. Beginner? No problem - tap the translations to see definitions and explainers, as well as the proper pronunciation of the phrase. Advanced? Try a higher level setting and a higher density for faster uptake. Skip the boring practice exercises, games, and gimmicks. Instead, pick up a book you've wanted to read and dive in! ========== PRISMATEXT WORKS Numerous peer-reviewed studies from around the world agree: diglot weave is one of the most effective learning methods for foreign language vocabulary retention. All levels welcome! The Prismatext experience is seamless and effortless, with settings from beginners up to advanced. ========== LEARN 17 LANGUAGES Arabic, Chinese (simplified), Dutch, French, German, Greek, Italian, Japanese, Korean, Latin, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Ukrainian YOUR PACE Read at the same speed you would a standard book THE MOST USEFUL VOCABULARY Prismatext analyzes each book individually, and selects useful words and phrases from each one, depending on your level HEAR THE CORRECT PRONUNCIATION In-app audio pronunciations keep you from guessing how words sound TRACK YOUR PROGRESS Watch your word count climb while you do nothing but read a great story REGULAR UPDATES & CONTENT Prismatext books improve with time - your bookshelf can only get better. We release new titles and content every week! OFFLINE READING Once a book is downloaded, it can be read offline ========== Try a sample in the app today, or subscribe to a plan from Prismatext online and see the magic of read & learn!
RidoBooks
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Read your favourite books — at your language level. RidoBooks is the language learning app that turns classic literature into your most powerful vocabulary teacher. Over 400 adapted bestsellers — The Great Gatsby, Frankenstein, Moby Dick, Alice's Adventures in Wonderland, and more — available in 5 language levels and 8 languages. WHY READING WORKS Reading is one of the most effective and natural ways to learn a language. RidoBooks puts this into practice: Deep Context Learning Seeing words in full sentences helps you remember not just what they mean, but how to use them naturally. Real Input, Not Boring Drills Instead of flashcards and grammar tables, you read meaningful, engaging stories — content that actually sticks. Repetition Without Boredom Frequent exposure to the same words across different stories makes vocabulary stick — naturally and effortlessly. Content at Your Level RidoBooks adapts every book to your current level, so you're never lost and always learning just enough. KEY FEATURES 400+ Adapted Classics & Bestsellers From The Great Gatsby to Frankenstein — timeless stories made accessible at your level. 8 Languages English, Spanish, French, Italian, German, Russian, Polish, Japanese. 5 Learning Levels Elementary, Beginner, Intermediate, Advanced, Slang/Native — progress at your own pace. Built-in Instant Translation Tap any passage to see the translation into your chosen language — reinforce understanding on the spot. Dark Mode & Night Reading Comfortable colours and dark mode to protect your eyes. Offline Mode Read anywhere, anytime — no internet connection needed. Smart Progress Tracking The app remembers where you left off — always pick up right where you stopped. No boring exercises. No grammar tables. Just real books, real stories, and real vocabulary growth — every day. Download RidoBooks and read your way to fluency. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Prismatext at none against RidoBooks's 12. Prismatext also leads on ads (none vs shown). On price, update cadence, 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
Both are free to download. RidoBooks sells 12 in-app purchases, starting at $3.99 per 7 days. Prismatext asks for nothing beyond the download.
Prismatext ships an update every 5 weeks, RidoBooks monthly. The most recent releases landed on October 6, 2026 and September 23, 2026 respectively.
| Parameter | Prismatext | RidoBooks |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (137 ratings) — better | — |
| Positive reviews | 54.5% of reviews | — |
| Number of ratings | 137 — better | — |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Prismatext LLC | Rido Lang Sp Z O.O. |
Bugs and requests
Prismatext
Reported bugs
3 issues- App crashes and freezes
- Login and access issues
- Incorrect translations and word choices
Requested features
4 requests- More book selection and genres
- Ability to toggle between target language and English
- Sync reading progress across devices
- Dark mode option
RidoBooks
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Prismatext
No in-app purchases
RidoBooks
- Weekly$3.997 Days
- RidoBooks Free Trial7 Days trial$4.997 Days
- Monthly$7.991 Month
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- Monthly Pro$9.991 Month
- Premium Monthly$9.991 Month
- Quarterly$14.993 Months
- Quarterly$17.993 Months
- Semiannual$17.996 Months
- Semiannual Pro$24.996 Months
- Yearly$29.991 Year
- Premium Yearly$29.991 Year
- Yearly Pro$39.991 Year
Questions
Is Prismatext free?
Is RidoBooks free?
Do Prismatext or RidoBooks have ads?
Which is updated more often, Prismatext or RidoBooks?
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