Comparison

BOOKR Class Learn English vs Twin Science

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

Head to head
About

BOOKR Class Learn English

An award-winning app offering animated stories and interactive games designed to improve English language skills for children aged 4-14. It focuses on developing reading, writing, listening, and communication abilities through engaging content and educational exercises.

Highlights
  • Animated storybooks
  • Interactive educational games
  • Pronunciation and grammar practice
  • Ad-free learning environment
  • Develops 21st-century skills
  • Offline access to downloaded content
Features
Read full description

Welcome to BOOKR Class, an award-winning library of curated animated books and interactive games for young English learners from 4 to 14 years old. Why use BOOKR Class? - better reading, writing, listening, and communicative skills through the narrated literary classics, modern stories, and songs - develop 21st-century skills: the stories introduce new cultures, raise awareness and develop creativity, critical thinking, and social-emotional skills. - helps to practice English spelling, grammar, and pronunciation through educational games, exercises, and quizzes - provides a safe, ad-free environment with thoroughly researched content by educators, children's literature experts, and psychologists We recommend downloading the app if you are - parent: your children can have a guilt-free fun time reading and playing with the app while learning English - English teacher: we offer a practical and easy-to-use tool for in-class, after-school, and distance learning solutions for K8 English classes and language schools. How does BOOKR Class enhance stories to improve language skills? - our illustrations make the characters come alive, thus laying the foundations for contextual, organic learning - animation and zooming catch the eye of the reader and develop comprehension skills without drawing too much attention away from the linguistic features - narration by professional voice-over artists facilitates the improvement of oral language comprehension skills and pronunciation - text highlighting helps the reader follow along at the same pace as the narrator - with educational games that are fun to play, created by teachers with a light-hearted layout and encouraging feedback to motivate learners Is there more to come? Yes, BOOKR Class is an ever-growing library. As a result, we regularly add new English books and games to each of the six proficiency levels. Can we read the books offline? The application requires a stable internet connection to sign in to BOOKR Class and start downloading books. However, as long as the subscription is valid, the downloaded stories are also available offline. Read, play and learn English with BOOKR Class!

About

Twin Science

This app provides sustainability and environmental education for children aged 7-12 through gamified STEM+A content. It features interactive videos, hands-on projects, trivia, and AI-based skill reports for parents and educators.

Highlights
  • SDG-based sustainability content
  • Gamified learning experience
  • AI-based monthly skill reports
  • Interactive discovery videos
  • Hands-on DIY projects
  • STEM+A trivia games
  • Ad-free and moderated environment
Features
Read full description

Twin is providing sustainability & environmental education! ► What Sets Twin Apart in 3Ps: • PURPOSE-LED: SDG-BASED CONTENT Twin provides sustainability and environmental education for children by introducing children to STEM+A solutions for complex problems. Content is linked to the United Nations Sustainable Development Goals. • PLAYFUL: GAMIFIED TWIN APP Twin app provides a playful learning experience for children so that they can learn complex topics while having fun. Engagement rates are 4X higher than average education applications. • PERSONALIZED: SKILL REPORTING With the Twin App's AI-based monthly skills report, teachers and parents can learn about children's unique skills and interests. ► What does Twin offer for educators? • Twin is the #1 app for playful sustainability & environmental education for 7-12 year olds • We cover a wide range of STEM+A topics with a special focus on science and technology. • Twin app demonstrates how STEM+A knowledge can be used for the good of our planet. • Skill report for each child via the teacher dashboard: Teachers get insight into their student's most frequently used 21st century skills such as creativity and problem solving, as well as their interest areas. • Example Activity Journey: Climate Change 1. Watch an Interactive video: Children observe climate change in Antarctica with interactive videos featuring a real explorer. 2. Create a Hands-on Project: Children complete global warming experiments, challenges and projects. 3. Solve Trivia Questions: Children play climate change trivia with friends and grow their knowledge together. 4. Play a STEM+A Game: Children collect trash from the ocean and compete with friends to get the highest points. ► What does Twin offer to parents? • Gamified Platform: Twin offers a unique gamified experience. With Twin, children will unleash their potential in Science, Technology, Engineering, Mathematics and the Arts (STEM+A) in a fully-moderated & safe environment. • Interactive Discovery Videos: Children discover actively & playfully with experts while developing their critical thinking and problem-solving skills. • Challenges: Unleash children's creativity & apply knowledge through 300+ DIY projects! • STEM Trivia: Time to challenge friends! With thousands of cool STEM+A questions, Twin offers one of the best trivia experiences out there. • Adventures: Ready for storified journeys? Turn learning into a true adventure with mini-games, DIY projects, and interactive videos. ► What are Twin Discovery Videos? • Discovery videos are interactive STEM videos that stimulate curiosity. • Content explained by real-life professionals makes learning relatable again! How about learning about climate change. ► Is Twin safe? • Children's safety is our priority! No bullies are allowed in the Twin app! Twin is a fully-moderated and ad-free social platform. ► Why Twin? * Our mission is to empower the next generation of curious minds & creative thinkers to build a better future for everyone. This is why we adopt a skill-based approach that develop conscience and competence in STEM at the same time. Our STEM4Good approach differentiates us from the other apps! ► Stay up to date • LIKE US – facebook.com/twinscience • FOLLOW US – instagram.com/twinscience ► Need help? • We love hearing from our community. Contact us any time: hello@twinscience.com ► Policies • Terms of Use: https://twinarcadiamedia.twinscience.com/app-files/onboarding-files/agreements_as_html/en_term_of_use.html • Privacy Policy: https://twinarcadiamedia.twinscience.com/app-files/onboarding-files/agreements_as_html/en_privacy_notice.html

Screenshots

BOOKR Class Learn English4 screens
Twin Science4 screens

Verdict

The call

The clearest difference is iOS requirement: BOOKR Class Learn English at 13.0 against Twin Science's 15.6. On price, rating, review sentiment and ratings volume 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. BOOKR Class Learn English sells 2 in-app purchases, starting at $7.99 per month and Twin Science sells 10 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Twin Science holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 60 and 76 respectively. Written reviews complicate that: 69% of BOOKR Class Learn English's written reviews are positive against 67% of Twin Science's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

BOOKR Class Learn English ships an update every 5 weeks, Twin Science every 2 months. The most recent releases landed on September 22, 2026 and August 8, 2026 respectively.

Scorecard1 real difference · 9 level
BOOKR Class Learn English versus Twin Science: the parameters behind the verdict, then further details
ParameterBOOKR Class Learn EnglishTwin Science
PriceFreeFree
Rating4.3 (60 ratings)4.5 (76 ratings) — better
Positive reviews69.0% of reviews — better66.7% of reviews
Number of ratings6076 — better
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size350 MB99 MB
Age rating4+4+
DeveloperBOOKR DigitalTWIN YAZILIM MUHENDISLIK SANAYI VE TICARET ANONIM SIRKETI

Customer experience

BOOKR Class Learn English

All ratings60 ratings
Positive81.7%
Neutral3.3%
Negative15.0%
Written reviews29 reviews
Positive69.0%
Neutral13.8%
Negative17.2%

Twin Science

All ratings73 ratings
Positive86.3%
Neutral2.7%
Negative11.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

2 purchases

BOOKR Class Learn English

Subscriptions2
  • Monthly subscription7 Days trial$7.991 Month
  • Yearly Subscription7 Days trial$62.991 Year
10 purchases

Twin Science

Subscriptions10
  • Premium Membership$2.491 Month
  • Premium Membership$2.991 Month
  • Premium Membership7 Days trial$3.491 Month
Show 7 more
  • Monthly Premium Plan7 Days trial$7.991 Month
  • Premium Membership$23.991 Year
  • Premium Membership$27.991 Year
  • Premium Membership7 Days trial$29.991 Year
  • 6 Months Education Pack$44.996 Months
  • Yearly Premium Plan7 Days trial$79.991 Year
  • 1 Year Education Pack$79.991 Year

Questions

Is BOOKR Class Learn English free?
BOOKR Class Learn English is free to download, with in-app purchases available.
Is Twin Science free?
Twin Science is free to download, with in-app purchases available.
Which has better reviews, BOOKR Class Learn English or Twin Science?
Twin Science is rated higher. BOOKR Class Learn English averages 4.3 out of 5 from 60 ratings, while Twin Science averages 4.5 from 76 ratings.
Do BOOKR Class Learn English or Twin Science have ads?
Neither BOOKR Class Learn English nor Twin Science shows ads.
Which is updated more often, BOOKR Class Learn English or Twin Science?
BOOKR Class Learn English ships an update every 5 weeks, and Twin Science every 2 months. Most recently, BOOKR Class Learn English was updated on September 22, 2026 and Twin Science on August 8, 2026.

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