Comparison

Sumizeit vs Book AI

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

Head to head
About

Sumizeit

Access concise summaries of non-fiction books in text, audio, infographic, podcast, and video formats. Learn key insights from experts in personal development, career, health, and more, in just minutes a day. Offers short audio courses for further learning.

Highlights
  • Text, audio, video book summaries
  • Infographic and podcast summaries
  • Short audio courses
  • Personal development topics
  • Career and success advice
  • Expert-curated content
  • Send summaries to Kindle
Features
Read full description

Sumizeit is more than a book summary app. It's your all-in-one app for learning, personal growth, and mindfulness. It a book summary app / micro learning app / and super cool learning app. Get the key ideas from 1,000+ bestselling nonfiction books in just 15 minutes — or even 5. Then go beyond books with bite-sized courses, skill-building lessons, daily challenges, riddles, podcast summaries, and guided sessions for meditation, sleep, relaxation, and focus. Whether you have 5 minutes or an hour, Sumizeit helps you make the most of your time. READ LESS. LEARN MORE. GROW EVERY DAY. WHY SUMIZEIT? Most book summary apps stop at summaries. Sumizeit goes further. Read a book summary on your commute. Take a quick course during lunch. Challenge your brain with a daily riddle. Build a practical skill. Listen to a podcast summary while walking. Or unwind with a guided meditation before bed. One app. More ways to grow. WHAT YOU GET WITH SUMIZEIT • 2,500+ BOOK SUMMARIES Discover the key ideas from bestselling nonfiction books including Atomic Habits, The Lean Startup, Thinking, Fast and Slow, The 4-Hour Workweek, and hundreds more. • 10,000+ PODCASt SUMMARIES Get comprehensive summaries of your favorite podcasts episodes. • 5 & 15-MINUTE SUMMARIES Short on time? Choose between quick 5-minute summaries and more detailed 15-minute versions. • TEXT, AUDIO, VIDEO & INFOGRAPHICS Learn your way. Read, listen, watch, or explore visual summaries. • BITE-SIZED COURSES Go beyond books with short courses covering fascinating and useful topics. Learn something new without sitting through hours of lectures. • MIND: MEDITATION, SLEEP & FOCUS Learning isn't always about consuming more information. Give your mind time to reset with guided sessions for meditation, relaxation, sleep, focus, and mindfulness. • DAILY CHALLENGES & RIDDLES Exercise your brain every day with quizzes, riddles, interesting questions, and challenges. Earn points, build streaks, and turn learning into a daily habit. • SKILL CARDS Build useful skills through bite-sized lessons and practical exercises. • QUIZZES & EXERCISES Test what you've learned and turn ideas into action with quizzes, exercises, and expert analysis. • PODCAST SUMMARIES Get the biggest ideas and takeaways from popular podcast episodes in minutes. • PERSONALIZED RECOMMENDATIONS Tell us your interests and goals, and we'll help you discover what to learn next. • HIGHLIGHTS & NOTES Save important ideas, highlight passages, and build your own personal knowledge library. • COMMUNITY Discuss books, exchange ideas, and learn with other curious people. • SEND TO KINDLE Send summaries directly to your Kindle and read wherever you prefer. • DARK MODE Enjoy a comfortable reading experience day or night. • NEW CONTENT EVERY WEEK New summaries and learning experiences are added regularly. MAKE 5 MINUTES COUNT Read a summary. Learn a new skill. Take a course. Solve a riddle. Test your knowledge. Discover a podcast. Meditate. Relax before bed. Sumizeit turns the small moments in your day into opportunities to learn, think, grow, and recharge. WHAT REVIEWERS ARE SAYING "It's like Spark Notes for adults." — Mashable "An incredibly easy way to absorb the biggest of thoughts." — Cult of Mac "An excellent tool for those looking to expand their knowledge efficiently." — AppReview360 Start learning today. Terms and Conditions: https://sumizeit.com/terms Privacy Policy: https://sumizeit.com/privacy

About

Book AI

Access concise summaries of thousands of books in minutes, delivered via AI-powered text or audio. Ideal for busy individuals seeking to expand their knowledge and gain insights from bestsellers across various genres.

Highlights
  • AI-powered book summaries
  • Audio summaries with narration
  • Thousands of titles across categories
  • Quick reading/listening sessions
  • Personalized recommendations
  • Seamless audio playback
  • Curated collections
  • Weekly content updates
Features
Read full description

Discover the power of learning without limits. Our app brings you thousands of professionally crafted book summaries that deliver the core insights from bestselling nonfiction books in just 15 minutes. Whether you're commuting, exercising, or taking a quick break, transform every spare moment into an opportunity for personal growth. Celebrate Father's Day with the Gift of Knowledge: This Father's Day, give dad something truly meaningful. Its the perfect way for fathers to stay sharp, learn new skills, and explore topics they're passionate about. From business strategies and leadership principles to health, mindfulness, and personal finance, dads can access a library designed for men who value continuous improvement. It's the thoughtful gift that keeps giving throughout the year, helping him grow both personally and professionally. Key Features That Make Learning Effortless: • Extensive Library: Access thousands of summaries across business, self-help, psychology, biography, science, productivity, and more • Audio & Text Options: Read summaries or listen hands-free while driving, working out, or doing chores • Quick 15-Minute Format: Get the main ideas and actionable takeaways without spending hours reading • Personalized Recommendations: Discover books tailored to your interests and goals • Curated Collections: Explore themed playlists on leadership, habit formation, financial freedom, and trending topics • Save Favorites: Bookmark summaries for quick reference whenever you need them • Regular Updates: New summaries added weekly from the latest bestsellers and timeless classics What You'll Learn: Dive into summaries of groundbreaking books that cover essential life and career skills. Master productivity techniques that help you accomplish more in less time. Understand the psychology behind successful habits and decision-making. Learn proven business strategies from industry leaders and entrepreneurs. Explore mindfulness practices that reduce stress and improve focus. Discover financial principles that build wealth and security. Gain leadership insights that inspire and motivate teams. Access biographical wisdom from history's most influential figures. Perfect For: • Professionals seeking career advancement and business knowledge • Fathers and parents balancing family time with personal development • Students supplementing their education with practical insights • Entrepreneurs looking for startup and growth strategies • Anyone committed to lifelong learning and self-improvement • Commuters wanting to make travel time productive • Book lovers who want to explore more titles • People preparing for important decisions or life transitions Transform Your Learning Habits: Instead of letting great books sit unread on your wishlist, start absorbing their wisdom today. Build a sustainable learning routine that fits your lifestyle. Whether you have five minutes or fifty, we adapt to your schedule, ensuring that personal growth never takes a backseat to a busy life. Download now and unlock a world of knowledge that fits in your pocket. Start your journey toward becoming the well-read, knowledgeable person you've always wanted to be. Your future self will thank you for the investment you make in learning today. Terms of use - http://thecookbk.com/terms.php?appname=com.rstream.booksummaries Privacy Policy - http://thecookbk.com/privacy.php?appname=com.rstream.booksummaries

Screenshots

Sumizeit4 screens
Book AI4 screens

Verdict

The call

The clearest difference is rating: Sumizeit at 4.5 against Book AI's 4.1. Sumizeit also leads on update cadence (every 4 days vs every 3 weeks) and review sentiment (78% vs 55%). On price, ads, in-app purchases and monetization model 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. Sumizeit sells 19 in-app purchases, starting at $0.99 per year and Book AI sells 8 in-app purchases, starting at $11.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sumizeit holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 282 and 57 respectively. Written reviews point the same way: 78% of Sumizeit's written reviews are positive against 55% of Book AI's.

UpkeepUpdate frequency

Sumizeit ships an update every 4 days, Book AI every 3 weeks. Both last shipped on October 29, 2026.

Scorecard4 real differences · 6 level
Sumizeit versus Book AI: the parameters behind the verdict, then further details
ParameterSumizeitBook AI
PriceFreeFree
Rating4.5 (282 ratings) — better4.1 (57 ratings)
Positive reviews77.8% of reviews — better54.5% of reviews
Number of ratings282 — better57
Update frequencyEvery 4 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.1 — better16.6
Further details — not scored
Size59 MB102 MB
Age rating4+4+
DeveloperScomy IncRiafy Technologies Pvt. Ltd.

Customer experience

Sumizeit

All ratings282 ratings
Positive88.7%
Neutral3.2%
Negative8.2%
Written reviews27 reviews
Positive77.8%
Neutral3.7%
Negative18.5%

Book AI

All ratings57 ratings
Positive77.2%
Neutral3.5%
Negative19.3%
Written reviews11 reviews
Positive54.5%
Neutral0.0%
Negative45.5%

Bugs and requests

Sumizeit

Reported bugs

8 issues
  • Crashes when opening Challenges
  • Crashes when bookmarking
  • Crashes when selecting interests
  • App crashes immediately on various actions
  • Login with Gmail not working
Show 3 more
  • Account not updating from free to lifetime
  • Dark mode not functioning correctly
  • Summaries oversimplified, missing key information

Requested features

2 requests
  • More video summaries
  • Sign In with Apple

Book AI

Not enough reviews yet to summarise bugs or requests.

In-app purchases

19 purchases

Sumizeit

Subscriptions14
  • Sumizeit Yearly Subscription$0.991 Year
  • Sumizeit Monthly Subscription$0.991 Month
  • SumizeitMonthly$4.991 Month
Show 11 more
  • Sumizeit Monthly Subscription$4.991 Month
  • Sumizeit Monthtly Subscription$5.991 Month
  • Sumizeit Monthly$6.991 Month
  • Sumizeit Yearly Subscription$7.991 Year
  • Sumizeit Premium Monthly$12.991 Month
  • SumizeItYearlySubscription$24.991 Year
  • Sumizeit Yearly 50% off$24.991 Year
  • Sumizeit Yearly Subscription$39.991 Year
  • Subscription Annual $39.99$39.991 Year
  • Sumizeit Yearly Subscription$49.991 Year
  • Sumizeit Yearly Subscription$69.001 Year
One-time5
  • Intelligence Type Test Results$0.99
  • 20 Infographics$9.99
  • 20+ Infographics$19.99
Show 2 more
  • Sumizeit Lifetime Subscription$69.99
  • Sumizeit Lifetime$99.99
8 purchases

Book AI

Subscriptions7
  • Book Summaries Monthly$11.491 Month
  • Book Summaries Monthly Trial3 Days trial$11.491 Month
  • Book Summaries Half Yearly$24.996 Months
Show 4 more
  • Book Summaries Six month Trial3 Days trial$24.996 Months
  • Book Summaries Yearly Trial3 Days trial$29.991 Year
  • Book Summaries Discounted1 Month trial$39.996 Months
  • Book Summaries Yearly$49.991 Year
One-time1
  • 7 days premium$2.99

Questions

Is Sumizeit free?
Sumizeit is free to download, with in-app purchases available.
Is Book AI free?
Book AI is free to download, with in-app purchases available.
Which has better reviews, Sumizeit or Book AI?
Sumizeit is rated higher. Sumizeit averages 4.5 out of 5 from 282 ratings, while Book AI averages 4.1 from 57 ratings.
Do Sumizeit or Book AI have ads?
Neither Sumizeit nor Book AI shows ads.
Which is updated more often, Sumizeit or Book AI?
Sumizeit ships an update every 4 days, and Book AI every 3 weeks. Most recently, Sumizeit was updated on October 29, 2026 and Book AI on October 29, 2026.

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