Readle vs RUB Bib
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Readle
Learn Spanish, French, German, and more through engaging real-world stories and bite-sized lessons. Improve reading, listening, and vocabulary with daily practice and progress tracking. Designed for quick, effective language acquisition in just 5 minutes a day.
- Learn through real-world stories
- Bite-sized daily lessons
- Improve reading and listening
- Instant word lookup
- Grammar in context
- Smart vocabulary practice
- Quiz and test skills
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Learn Spanish, French, German & more with real stories. Forget boring textbooks. Practice daily with structured levels designed for real progress. Improve your language skills in just 5 minutes a day with reading, listening, and testing in one place. Track your progress and see real results. Learn languages faster with over 2,000 real-world news stories, transformed into bite-sized lessons, flashcards, quizzes, and interactive practice. Readle (formerly Langster) is a CEFR-graded language learning app designed to help you master French, German, Spanish, English, Italian, Japanese, and Chinese in real-world contexts. Just 5 minutes a day is all it takes to learn, practice, and improve consistently. WHY Readle? • Learn through real stories, not random sentences • Practice with flashcards, quizzes, and vocabulary training • Improve reading, listening, and comprehension together • Built for daily learning and measurable progress Download Readle for FREE and start learning languages in a smarter way. ====== WHAT LANGUAGES CAN I LEARN? You can learn French, Spanish, German, English, Italian, Japanese, and Chinese ====== WHY LEARNING WITH STORIES WORKS ► LEARN THROUGH IMMERSION & LEVELS Our language experts turn real-world news into structured lessons across: • CEFR (A1–B2) • JLPT (N5–N2) • HSK (1–4) Learn step-by-step with level-based progression. ► BITE-SIZED DAILY LESSONS Over 2,000 stories & articles designed for: • fast learning • daily practice • real-world understanding Includes vocabulary, grammar tips, and context-based learning. ► IMPROVE READING & LISTENING • Listen sentence by sentence • Train pronunciation naturally • Learn how the language is actually used ► INSTANT WORD LOOKUP Tap any word for: • translation • conjugation • meaning in context No need to switch between apps. ► GRAMMAR IN CONTEXT Understand grammar naturally through real examples. Perfect companion for learners using: Deutsche Welle, DW learn German, Klett Lernen, Klett Augmented, Schritte Plus Neu, Hueber, TV5MONDE, etc. ► SMART VOCABULARY PRACTICE • Spaced repetition flashcards • Review at the optimal time • Turn passive reading into active learning ► QUIZ & TEST YOUR SKILLS • Practice with quizzes in every story • Test reading comprehension and vocabulary • Prepare for exams like: IELTS, TOEFL, DELF, Goethe, DELE, JLPT, HSK ► DAILY STORIES & CONTENT New stories every day across topics like: • Travel • Culture • Food • Technology • Science • News (TV5monde, BBC, RFI, France 24, Le Monde, French TV, radio, DW/Deutsche Welle, etc.) WHY READLE WORKS Readle combines: • Real-world content • Daily practice + testing loop • Clear progress tracking So you don’t just learn — you improve every day. SUPPORT Questions? Contact us: support@readle-app.com Privacy policy: https://readle-app.com/en/privacy-policy/ Terms of use: https://readle-app.com/en/terms-of-use/
RUB Bib
Manage your library account, including loans and reservations. Access course offerings, search the online catalog, and stay updated on library news. Authenticate for services and view visitor capacity.
- Manage library loans and reservations
- Extend loans
- View accrued fees
- Browse and book library courses
- Search university online catalog
- Submit literature acquisition requests
- View visitor capacity and library news
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You can use the app to authenticate yourself at the self-checkout machines or at the service counters in order to borrow media or use other services. With the RUB Bib app you also always have a complete overview of your library account. You can view your loans and - if possible - extend them. You can also manage your reservations in the app and view any accrued fees. With the RUB-Bib-App you also have the entire range of courses and events offered by the university library with you anytime, anywhere and you can book courses on various topics, such as compact basic courses on the university library, research training or introductory courses for various literature management software. In addition, you can search the Ruhr-University's entire online catalog, submit literature acquisition requests, view the current visitor capacity, and access the latest library news at any time.
Screenshots
Verdict
The clearest difference is review sentiment: Readle at 81% against RUB Bib's 0%. Readle also leads on update cadence (every 3 weeks vs every 7 months). RUB Bib's advantage is in-app purchases (none vs 9) and ads (none vs shown). On price, 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. Readle sells 9 in-app purchases, starting at $12.99 per month. RUB Bib asks for nothing beyond the download.
Readle ships an update every 3 weeks, RUB Bib every 7 months. Both last shipped on November 7, 2026.
| Parameter | Readle | RUB Bib |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.5K ratings) — better | — |
| Positive reviews | 81.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 1.5K — better | — |
| Update frequency | Every 3 weeks — better | Every 7 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 127 MB | 39 MB |
| Age rating | 12+ | 4+ |
| Developer | A-Type Technologies | Ruhr-Universitaet Bochum |
Customer experience
Readle
RUB Bib
Bugs and requests
Readle
Reported bugs
2 issues- Audio not working for some users
- Subscription issues and unexpected charges
Requested features
5 requests- Add more languages beyond the current offerings
- Improve navigation and search functionality
- Provide more detailed grammar explanations
- Allow customization of vocabulary and quiz settings
- Integrate speaking and writing practice exercises
RUB Bib
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Readle
- Learn Languages: Premium7 Days trial$12.991 Month
- Langster Monthly: Daily Reads$12.991 Month
- Readle Monthly: Daily Reads$14.991 Month
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- Readle Quarterly Subscription$44.993 Months
- Langster Yearly: Daily Stories7 Days trial$69.991 Year
- Learn Languages: Premium$69.991 Year
- Readle Yearly: Daily Stories7 Days trial$69.991 Year
- Langster Premium Lifetime$199.99
- Readle Premium Lifetime$249.99
RUB Bib
No in-app purchases









