Comparison

Koki Flashcards vs LeitnerAI

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

Head to head
About

Koki Flashcards

Master vocabulary with a smart, spaced repetition system. This multilingual flashcard app aids long-term memory retention through personalized review schedules, multimedia content, and custom card creation. Study languages effectively for exams or daily communication.

Highlights
  • Spaced Repetition System (SRS)
  • Ready-to-use vocabulary decks
  • Multimedia flashcards (images, audio, examples)
  • Custom flashcard creation
  • Personalized review schedules
  • Offline study mode
  • Cross-device synchronization
Features
Read full description

Koki Flashcards – Study Smarter, Remember Longer! Koki Flashcards is an Anki-style flashcard learning app that combines artificial intelligence (AI), spaced repetition (SRS), and multiple interactive learning modes to help you study effectively and remember more. With a beautiful, modern, and easy-to-use interface, Koki lets you start learning right away without complicated setup. Create your own flashcards, explore ready-made decks, or use AI to automatically generate flashcards and writing exercises. SIMPLE AND EASY-TO-USE FLASHCARDS • Beautiful and intuitive flash cards interface • Flip cards, reveal answers, and rate how well you remember • Track cards you're learning, remembered cards, and difficult cards • Customize flashcard content and learning modes AI FLASHCARD MAKER AND WRITING PRACTICE • Automatically create flashcards with AI • Generate cards with vocabulary, meanings, and examples • Add images, audio, and personal notes • Organize flashcards into decks, categories, and tags • Generate writing exercises with AI based on learned content • Strengthen memory through Active Recall SMART REVIEWS WITH SPACED REPETITION (SRS) Like Anki flashcards, Koki automatically schedules reviews to help you remember information longer. • Review difficult cards more frequently • Gradually increase review intervals for remembered cards • Automatically manage your review schedule MULTIPLE LEARNING MODES • Flashcards and spaced repetition • Writing and spelling practice • Pronunciation practice with AI feedback • Listening and dictation • Multiple-choice quizzes and matching exercises • Reverse flashcard learning • Focused reviews of forgotten cards LEARN LANGUAGES AND MUCH MORE Koki is ideal for learning English, Japanese, Korean, and Chinese vocabulary, preparing for IELTS, TOEIC, JLPT, HSK, and TOPIK exams, or memorizing academic knowledge and professional terminology. Unlike traditional flashcard tools that may require complicated setup, Koki offers a simple learning experience with AI-powered content creation and interactive practice modes. Create flashcards, practice every day, and remember more with Koki Flashcards! Terms of Service: https://anki.edu.vn/en/terms-of-service Privacy Policy: https://anki.edu.vn/en/privacy

About

LeitnerAI

This application uses the Leitner system to help users learn and memorize vocabulary. Words are sorted into boxes based on mastery, with AI assisting in creating an optimal learning path. It focuses on efficient study by prioritizing difficult words.

Highlights
  • Leitner system for spaced repetition
  • Vocabulary memorization
  • AI-generated learning paths
  • Progress tracking through study boxes
  • Focus on difficult words
Features
Read full description

No extra features. No distractions. LeitnerAI uses the proven Leitner system to help you memorize vocabulary through spaced repetition. • 5-box Leitner system — words progress as you learn them • Interactive flashcards with hints and translations • AI-powered word generation (optional) • CSV import for bulk vocabulary • Daily reminders and study streaks • Weekly goals and milestone tracking All words start in Box 1. Remember a word and it moves forward. Forget it and it returns to Box 1. Easy words step aside; hard words get your attention. Built for one thing only: learning and memorizing vocabulary.

Screenshots

Koki Flashcards4 screens
LeitnerAI4 screens

Verdict

The call

The clearest difference is in-app purchases: LeitnerAI at none against Koki Flashcards's 10. LeitnerAI also leads on ads (none vs shown) and review sentiment (100% vs 86%). Koki Flashcards's advantage is rating (4.8 vs 4.5) and ratings volume (347 vs 8). 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. Koki Flashcards sells 10 in-app purchases, starting at $2.99 per month. LeitnerAI asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Koki Flashcards holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Koki Flashcards has 347 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 86% of Koki Flashcards's written reviews are positive against 100% of LeitnerAI's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Koki Flashcards ships an update every 10 days, LeitnerAI every 3 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 3 level
Koki Flashcards versus LeitnerAI: the parameters behind the verdict, then further details
ParameterKoki FlashcardsLeitnerAI
PriceFreeFree
Rating4.8 (347 ratings) — better4.5 (8 ratings)
Positive reviews86.1% of reviews100.0% of reviews — better
Number of ratings347 — better8
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better16.0
Further details — not scored
Size84 MB5 MB
Age rating12+4+
DeveloperKOKI SOFTWAREAmir Faghihi

Customer experience

Koki Flashcards

All ratings347 ratings
Positive96.8%
Neutral2.9%
Negative0.3%
Written reviews36 reviews
Positive86.1%
Neutral13.9%
Negative0.0%

LeitnerAI

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

Koki Flashcards

Subscriptions2
  • Subscription monthly3 Days trial$2.991 Month
  • Subscription Anki all package3 Days trial$17.991 Year
One-time8
  • Buy 500 Points$2.99
  • 1000 Basic English Words$4.99
  • IELTS Vocabulary Discount$4.99
Show 5 more
  • English Daily Routine$4.99
  • Phrases for Basic Communicate$4.99
  • English - IELTS Vocabulary$9.99
  • Koki Flashcards Lifetime Discount$59.99
  • Koki Flashcards Lifetime$79.99
None

LeitnerAI

No in-app purchases

Questions

Is Koki Flashcards free?
Koki Flashcards is free to download, with in-app purchases available.
Is LeitnerAI free?
LeitnerAI is free to download, with no in-app purchases.
Which has better reviews, Koki Flashcards or LeitnerAI?
Koki Flashcards is rated higher. Koki Flashcards averages 4.8 out of 5 from 347 ratings, while LeitnerAI averages 4.5 from 8 ratings.
Do Koki Flashcards or LeitnerAI have ads?
Koki Flashcards shows ads; LeitnerAI does not.
Which is updated more often, Koki Flashcards or LeitnerAI?
Koki Flashcards ships an update every 10 days, and LeitnerAI every 3 weeks. Most recently, Koki Flashcards was updated on November 7, 2026 and LeitnerAI on October 30, 2026.

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