Comparison

Booklet vs Kartei

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

Head to head
About

Booklet

Features
Read full description

Learn anything faster with smart flashcards designed to help you build real, long-term knowledge. Booklet helps you study any topic through active recall, spaced repetition, and structured learning sets. Whether you're learning languages, improving your general knowledge, or studying for exams, you can turn complex information into simple, memorable flashcards. Learn with Ready-Made Study Sets Start immediately with high-quality flashcard decks covering popular topics such as languages, geography, personal finance, science, and more. Each set is designed to help you learn efficiently without preparation. Create Your Own Flashcards Build personalized study decks in seconds. Add your own content, organize it by topic, and study exactly what you need to learn โ€” from school subjects to professional skills. Spaced Repetition That Works Improve memory retention with a proven learning technique used by top learning systems. Booklet automatically schedules reviews at the right time, so you remember more with less effort. Discover Thousands of Public Sets Search and explore a growing library of flashcards created by the community. Find ready-made decks on almost any topic and start learning instantly. Designed for Real Learning Booklet is built for one purpose: helping you actually remember what you study. It combines simplicity, speed, and effective learning science to make studying more productive and less time-consuming. Key Features โ€ข Ready-made flashcard sets โ€ข Create and customize your own decks โ€ข Spaced repetition system โ€ข Search and explore public study sets โ€ข Lightweight and fast learning experience Terms of Use: https://thebooklet.app/terms Privacy Policy: https://thebooklet.app/privacy

About

Kartei

Features
Read full description

Turn good questions into knowledge that stays. Kartei combines your own flashcards with spaced repetition in a focused, native study space for iPhone, iPad and Mac. KNOW WHAT TO STUDY NEXT See which cards are due today. Reveal the answer, rate your recall honestly and let FSRS-6 calculate the next review. Choose your target retention and daily time budget. MAKE CARDS THAT FIT YOUR SUBJECT Create question-and-answer cards, cloze deletions and image occlusions. Add explanations, sources and tags. Organize your knowledge into decks, then find cards with search and filters. GIVE EQUATIONS THEIR SPACE Write mathematical and chemical formulas in TeX. Equations render offline, making Kartei a useful home for physics, calculus, biochemistry and other subjects that need more than plain text. THINK IN YOUR OWN HANDWRITING Write on the front and back of cards with your finger on iPad and iPhone, or with Apple Pencil on iPad. Your strokes stay editable. View and study handwritten cards on Mac. KEEP THE EXPLANATION WITH THE QUESTION Add images, voice recordings, audio, video and PDF attachments to your cards. Bring the material that helps you understand and remember. STUDY LOCALLY. TAKE YOUR COLLECTION WITH YOU. Your collection is stored on your device. Export cards, media and review history together, then import them on another device. Move over from Anki with packages (.apkg) including images; with Kartei Pro, your progress, sound and video come along too. Text cards import through CSV or TSV. SEE YOUR ACTUAL PROGRESS Track card reviews and the progress of your decks. Choose light or dark mode, and use keyboard shortcuts on Mac to keep your workflow moving. Start with a sample collection covering physics, biochemistry and calculus. Then build your own flashcards for school, university, vocabulary or professional learning. KARTEI PRO Unlimited cards and decks, spaced repetition, formulas, images and export are free. Kartei Pro adds handwriting and sketches, audio and dictation, video and PDF, plus bringing progress, sound and video over from Anki. Choose a monthly or yearly subscription or a one-time purchase. Price and duration are shown before purchase. Subscriptions renew automatically unless canceled in your Apple subscriptions. A free trial is offered when eligible. Purchases can be restored in the app. Privacy Policy: https://dimar2811.github.io/biohacker-support/kartei/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Booklet4 screens
Kartei4 screens

Verdict

The call

The clearest difference is device support: Kartei at 3 against Booklet's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Booklet sells 2 in-app purchases, starting at $9.99 per month and Kartei sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Booklet ships an update every 5 days, Kartei every 3 days. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

Scorecard1 real difference ยท 5 level
Booklet versus Kartei: the parameters behind the verdict, then further details
ParameterBookletKartei
PriceFreeFree
Update frequencyEvery 5 daysEvery 3 days โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad, Mac โ€” better
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size40 MB12 MB
Age rating12+4+
DeveloperNikita VasilyevMarc Hammerschmidt

In-app purchases

2 purchases

Booklet

Subscriptions2
  • Monthly$9.991 Month
  • Yearly7 Days trial$44.991 Year
3 purchases

Kartei

Subscriptions2
  • Kartei Pro Monthly$3.991 Month
  • Kartei Pro Yearly3 Days trial$17.991 Year
One-time1
  • Kartei Pro Lifetime$44.99

Questions

Is Booklet free?
Booklet is free to download, with in-app purchases available.
Is Kartei free?
Kartei is free to download, with in-app purchases available.
Do Booklet or Kartei have ads?
Neither Booklet nor Kartei shows ads.
Which is updated more often, Booklet or Kartei?
Booklet ships an update every 5 days, and Kartei every 3 days. Most recently, Booklet was updated on October 30, 2026 and Kartei on November 6, 2026.

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