Comparison

PopStudy vs Readle

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

Head to head
About

PopStudy

Master any subject with this educational app utilizing a spaced repetition system. Create custom study mixes, engage in personalized sessions, and track your learning progress. Access curated content and study offline on your devices.

Highlights
  • Spaced repetition system
  • Curated expert content
  • Customizable study mixes
  • Personalized daily sessions
  • Progress tracking
  • Cross-device syncing
  • Offline studying
Features
Read full description

PopStudy — Master Spanish, French, or Chinese Most language apps teach you to dabble. PopStudy is built for learners who want to actually master a language — to read, write, listen, and speak with real fluency. Three languages. Curriculum-grade content. An AI coach that sharpens your skills. How does it work? Have you ever found yourself unwittingly singing the words to a song that's played over and over on the radio? That's spaced repetition at work. Research shows our brains transform repeated information into real knowledge, very quickly. PopStudy uses a scientifically-tuned spaced repetition engine to help you achieve fluency in record time — training you to recognize the nuanced sounds, patterns, and rhythms that are the building blocks of any language. What's inside: - A scientifically-tuned spaced repetition engine that gets vocabulary and grammar to stick — faster than streak-based apps. - An expert-curated library of lessons in Spanish, French, and Chinese, charting a path for everyday learners, plus ACTFL-aligned paths for school programs. - Custom AI lessons on any topic you choose — from job interview prep to vocabulary from your favorite TV shows — generated on demand. - A 24/7 AI coach to answer your questions and target your learning goals. - Listening, reading, speaking, and writing activities — comprehension drills built on native-speaker audio, pronunciation practice with instant feedback, spelling drills, and role-play scenarios. - Daily performance reports that show your strengths and weaknesses, so you always know how far you've come and where you need to go next. - Cross-platform sync across iPhone, iPad, and the web. Pick up where you left off. PopStudy is built for serious learners — students preparing for AP Spanish, AP French, or HSK Chinese exams; professionals working toward fluency; heritage speakers reconnecting with a family language; and anyone ready to go beyond beginner streaks. Have fun speaking your new language with confidence — you'll amaze yourself and the people around you. Download PopStudy and start mastering your language today. PopStudy Premium is an auto-renewable subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://popstudy.com/privacy_policy

About

Readle

Master new languages through engaging real-world stories and bite-sized lessons. Practice reading, listening, and vocabulary with interactive quizzes and flashcards. Track your progress and see measurable improvements in just 5 minutes a day.

Highlights
  • Learn through real stories
  • Bite-sized daily lessons
  • Reading and listening practice
  • Instant word lookup
  • Smart vocabulary practice
  • Quizzes and skill testing
  • Progress tracking
Features
Read full description

Learn Spanish, French, German & more with real stories — not boring textbooks. Practice daily with structured levels designed for real progress. Improve your language skills in just 5 minutes a day — reading, listening, and testing in one place. Track your progress and see real results — not just lessons. 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, 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, 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/

Screenshots

PopStudy4 screens
Readle4 screens

Verdict

The call

The clearest difference is ads: PopStudy at none against Readle's shown. PopStudy also leads on review sentiment (100% vs 81%) and rating (4.9 vs 4.7). Readle's advantage is ratings volume (1.4K vs 8) and iOS requirement (15.0 vs 18.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PopStudy sells 3 one-off in-app purchases and Readle sells 9 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PopStudy holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Readle has 1.4K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of PopStudy's written reviews are positive against 81% of Readle's.

UpkeepUpdate frequency

PopStudy ships an update fortnightly, Readle every 3 weeks. The most recent releases landed on September 17, 2026 and September 25, 2026 respectively.

Scorecard6 real differences · 4 level
PopStudy versus Readle: the parameters behind the verdict, then further details
ParameterPopStudyReadle
PriceFreeFree
Rating4.9 (8 ratings) — better4.7 (1.4K ratings)
Positive reviews100.0% of reviews — better81.1% of reviews
Number of ratings81.4K — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size145 MB153 MB
Age rating4+12+
DeveloperLongtail StudiosA-Type Technologies

Customer experience

PopStudy

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Readle

All ratings1,447 ratings
Positive92.4%
Neutral3.0%
Negative4.6%
Written reviews906 reviews
Positive81.1%
Neutral9.3%
Negative9.6%

Bugs and requests

PopStudy

Not enough reviews yet to summarise bugs or 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

In-app purchases

3 purchases

PopStudy

One-time3
  • 1-Month Subscription$7.99
  • 3-Month Subscription$19.99
  • 1-Year Subscription$59.99
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

Questions

Is PopStudy free?
PopStudy is free to download, with in-app purchases available.
Is Readle free?
Readle is free to download, with in-app purchases available.
Which has better reviews, PopStudy or Readle?
PopStudy is rated higher. PopStudy averages 4.9 out of 5 from 8 ratings, while Readle averages 4.7 from 1.4K ratings.
Do PopStudy or Readle have ads?
Readle shows ads; PopStudy does not.
Which is updated more often, PopStudy or Readle?
PopStudy ships an update fortnightly, and Readle every 3 weeks. Most recently, PopStudy was updated on September 17, 2026 and Readle on September 25, 2026.

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