Comparison

Japanese Vocab Ninja vs Kanji Flash Study

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

Head to head
About

Japanese Vocab Ninja

Features
Read full description

Learn Japanese the fun and fast way with Japanese Vocab Ninja: Basic! This app is designed to help beginners master essential Japanese vocabulary with ease. Start your journey with carefully selected words used in daily life. Each word comes with clear English meanings and romaji support, so you can focus on learning without getting stuck. Whether studying for travel, school, or personal growth, this app gives you the tools you need to succeed. Features: 1. 200+ basic Japanese words 2. Flashcard and quiz practice 3. Romaji and English meaning for every word 4. Fun, simple, and effective learning experience 5. Works offline – study anytime, anywhere Words are grouped into useful themes, such as food, numbers, greetings, and more. Review and test yourself to ensure the words stick. Track your progress like a ninja and unlock your Japanese skills step by step! This app is perfect for: 1. Total beginners 2. People who want to build a strong vocabulary base 3. Anyone looking to learn Japanese in a simple and engaging way Start now and boost your Japanese vocabulary fast. No stress, no pressureβ€”just fun, effective learning.

About

Kanji Flash Study

Features
Read full description

Learn and retain Japanese kanji the proven way β€” with spaced repetition. Kanji Flash Study covers all 1,318 kanji from JLPT N5 through N1, complete with meanings, on'yomi and kun'yomi readings, stroke counts, and example vocabulary. The built-in SM-2 algorithm β€” the same system behind Anki β€” schedules your reviews at scientifically optimal intervals so you spend more time on what you're about to forget and less time on what you already know. HOW IT WORKS Pick your JLPT levels and session size, then tap Start Review. Each card shows a kanji character β€” tap to reveal its meaning, readings, and an example word. Rate your recall as Again, Hard, Good, or Easy, and the app adjusts the next review date automatically. Cards you miss are re-queued in the same session so you always end on a strong note. FEATURES - 1,318 kanji across JLPT N5, N4, N3, N2, and N1 - SM-2 spaced repetition for efficient long-term memorization - On'yomi and kun'yomi readings with example words and translations - Searchable kanji library with level filters and progress indicators - Statistics dashboard with streak tracking, accuracy, activity heatmap, and per-level breakdown - Daily study reminders via notifications - Fully offline β€” no account, no internet, no subscriptions - VoiceOver and Reduce Motion accessibility support - Clean, native SwiftUI interface designed for focused study BUILT FOR EVERY LEARNER Whether you're starting with basic N5 kanji or tackling advanced N1 characters, the app adapts to your pace. Select one level or all five β€” your progress is tracked independently for each. YOUR PROGRESS, YOUR DEVICE All study data stays on your device. No sign-up required, no data leaves your phone. Just open the app and start learning.

Screenshots

Japanese Vocab Ninja4 screens
Kanji Flash Study4 screens

Verdict

The call

The clearest difference is ads: Kanji Flash Study at none against Japanese Vocab Ninja's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Β· 5 level
Japanese Vocab Ninja versus Kanji Flash Study: the parameters behind the verdict, then further details
ParameterJapanese Vocab NinjaKanji Flash Study
PriceFreeFree
Update frequencyβ€”Every 3 days
AdsYesNo β€” better
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.616.6
Further details β€” not scored
Size17 MB2 MB
Age rating4+4+
DeveloperYingwen WangQuinten Sandberg

In-app purchases

None

Japanese Vocab Ninja

No in-app purchases

None

Kanji Flash Study

No in-app purchases

Questions

Is Japanese Vocab Ninja free?
Japanese Vocab Ninja is free to download, with no in-app purchases.
Is Kanji Flash Study free?
Kanji Flash Study is free to download, with no in-app purchases.
Do Japanese Vocab Ninja or Kanji Flash Study have ads?
Japanese Vocab Ninja shows ads; Kanji Flash Study does not.

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