Comparison

KanaDrills vs Challenge with Erin

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

Head to head
About

KanaDrills

Master Japanese hiragana and katakana with this focused learning tool. It offers customizable quizzes to test your knowledge of the Japanese syllabaries, including combination characters. Track your progress and sync scores across devices.

Highlights
  • Complete hiragana and katakana syllabaries
  • Includes combination characters
  • Customizable quiz lengths (25-100 questions)
  • Progress tracking with high scores
  • iCloud synchronization
  • Universal app for iOS devices
Read full description

Master Japanese kana with KanaDrills. Easily improve your hiragana and katakana anywhere. KanaDrills is a simple app that does one thing well: test your kana. Its simple and elegant interface gets out of the way so you can focus on learning. Costs less than a pack of blank flash cards. FEATURES - Includes complete hiragana and katakana syllabaries, including combination characters (dakuten/ten-ten, handakuten, and yoon). - Test yourself with 25, 50, 75, or 100 questions. Chose katakana or hiragana. - Keep track of your progress with high scores. - iCloud: Synchronize your high scores across your all of your iOS devices. - Universal App: One app works on iPhone, iPad, and iPod Touch.

About

Challenge with Erin

This app offers interactive lessons and quizzes to help users learn Japanese vocabulary, grammar, and culture. It features engaging games, manga-based dialogues, and cultural trivia to make studying enjoyable and effective. Track your progress, earn certificates, and compete with others on leaderboards.

Highlights
  • Interactive vocabulary games
  • Manga-based dialogue practice
  • Japanese culture quizzes
  • Progress tracking and points system
  • Weekly tests with certificates
  • Mini dictionary with Romanization
Features
Read full description

-Contents and how to use the app- Study and enjoy yourself. Study section In the study section (‘Let’s Try’) there are four maps: spring, summer, autumn and winter, and you start with spring in the same way as Japanese schools start in spring. Contents: ・KOTOBA1 remember words through a game where you match cards with the same pictures ・KOTOBA2 make sentences by matching illustrations of verbs with cards of vocabulary often used with those verbs ・KOTOBA3 choose illustration cards with the same meaning as Japanese character cards and match the cards ・MANGA become characters in a manga, choose the appropriate lines from the choices you are given, and read them out loud ・BUNKA deepen your understanding of Japan through a quiz about Japanese culture and society ・STAGE TEST a review test of what you studied at each stage. 20 multiple choice questions each with four options -Challenge yourself! - Test section There are 16 tests altogether in the test section (‘TEST’). You can take eight of these any one week. The questions change each week. Challenge yourself and check which Japanese vocabulary and words you remember and know with this test. Once you finish the tests, you will be issued with a certificate of results that includes your name. If your percentage of correct answers exceeds 80%, you receive a pass certificate that includes a medal (illustration)! -A variety of features- ・KOTOBA LIST A mini dictionary where you can find all the vocabulary and expressions that appear in the app. Each of the words that you answered that you had remembered have a check mark next to them. In the list each word is also written in Roman alphabet and hiragana/katakana, and there is a translation of the word’s meaning to enable you to study Japanese characters. ・STATUS Every time you log in to the study section and study, you receive 100 points, and when you take a stage test, that score is added as points. You can see the results of your study to date, including your overall points, your weekly points (total points from the most recent Monday to Sunday), the number of words you have remembered so far, the number of stages you have cleared, and the number of tests you have passed. ・RANKING Displayed here is the overall point ranking of all learners using this app and the number of stages they have cleared, as well as your own overall points and number of stages cleared. ・HONIGON’S CAMERA When you clear the stage test of each stage in the study section, HONIGON’S CAMERA starts up. For each stage various different frames (background illustrations) are displayed, and you can take a ‘celebratory photograph’ combining these frames and a photo of yourself that you take.

Screenshots

KanaDrills4 screens
Challenge with Erin4 screens

Verdict

The call

The clearest difference is rating: Challenge with Erin at 4.7 against KanaDrills's 4.0. Challenge with Erin also leads on in-app purchases (none vs 1) and update cadence (every 5 months vs every 12 months). KanaDrills's advantage is review sentiment (75% vs 63%). On price, ads, monetization model and device support 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. KanaDrills sells 1 one-off in-app purchase. Challenge with Erin asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Challenge with Erin holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Challenge with Erin has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 75% of KanaDrills's written reviews are positive against 63% of Challenge with Erin's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

KanaDrills ships an update every 12 months, Challenge with Erin every 5 months. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
KanaDrills versus Challenge with Erin: the parameters behind the verdict, then further details
ParameterKanaDrillsChallenge with Erin
PriceFreeFree
Rating4.0 (3 ratings)4.7 (16 ratings) — better
Positive reviews75.0% of reviews — better62.5% of reviews
Number of ratings316 — better
Update frequencyEvery 12 monthsEvery 5 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size1 MB290 MB
Age rating4+4+
DeveloperGestell, LLCThe Japan Foundation Japanese-Language Institute, Kansai

Customer experience

KanaDrills

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Challenge with Erin

All ratings16 ratings
Positive93.8%
Neutral0.0%
Negative6.3%
Written reviews24 reviews
Positive62.5%
Neutral12.5%
Negative25.0%

In-app purchases

1 purchases

KanaDrills

One-time1
  • Extend Kana Drills$2.99
None

Challenge with Erin

No in-app purchases

Questions

Is KanaDrills free?
KanaDrills is free to download, with in-app purchases available.
Is Challenge with Erin free?
Challenge with Erin is free to download, with no in-app purchases.
Which has better reviews, KanaDrills or Challenge with Erin?
Challenge with Erin is rated higher. KanaDrills averages 4.0 out of 5 from 3 ratings, while Challenge with Erin averages 4.7 from 16 ratings.
Do KanaDrills or Challenge with Erin have ads?
Neither KanaDrills nor Challenge with Erin shows ads.
Which is updated more often, KanaDrills or Challenge with Erin?
KanaDrills ships an update every 12 months, and Challenge with Erin every 5 months. Most recently, KanaDrills was updated on October 13, 2026 and Challenge with Erin on October 20, 2026.

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