Comparison

Readle vs RUB Bib

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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/

About

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.

Highlights
  • 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
Features
Read full description

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

Readle4 screens
RUB Bib4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Readle ships an update every 3 weeks, RUB Bib every 7 months. Both last shipped on November 7, 2026.

Scorecard5 real differences · 5 level
Readle versus RUB Bib: the parameters behind the verdict, then further details
ParameterReadleRUB Bib
PriceFreeFree
Rating4.7 (1.5K ratings) — better—
Positive reviews81.3% of reviews — better0.0% of reviews
Number of ratings1.5K — better—
Update frequencyEvery 3 weeks — betterEvery 7 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size127 MB39 MB
Age rating12+4+
DeveloperA-Type TechnologiesRuhr-Universitaet Bochum

Customer experience

Readle

All ratings1,517 ratings
Positive92.4%
Neutral3.1%
Negative4.5%
Written reviews919 reviews
Positive81.3%
Neutral9.2%
Negative9.5%

RUB Bib

Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

9 purchases

Readle

Subscriptions7
  • Learn Languages: Premium7 Days trial$12.991 Month
  • Langster Monthly: Daily Reads$12.991 Month
  • Readle Monthly: Daily Reads$14.991 Month
Show 4 more
  • 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
One-time2
  • Langster Premium Lifetime$199.99
  • Readle Premium Lifetime$249.99
None

RUB Bib

No in-app purchases

Questions

Is Readle free?
Readle is free to download, with in-app purchases available.
Is RUB Bib free?
RUB Bib is free to download, with no in-app purchases.
Do Readle or RUB Bib have ads?
Readle shows ads; RUB Bib does not.
Which is updated more often, Readle or RUB Bib?
Readle ships an update every 3 weeks, and RUB Bib every 7 months. Most recently, Readle was updated on November 7, 2026 and RUB Bib on November 7, 2026.

Other comparisons