Comparison

Kanji for Junior High Exam vs ちょこ暗 算数

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

Head to head
About

Kanji for Junior High Exam

Master 1,800 kanji questions for junior high exams with a unique algorithm based on the forgetting curve. Self-assessment allows for rapid flashcard-style study, prioritizing difficult questions for solid retention. Customize your learning with special review courses and the ability to register your own questions.

Highlights
  • Forgetting curve algorithm
  • Self-assessment study
  • Review incorrect questions
  • Register custom questions
  • Mastery course
  • Weak question registration
Features
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You can quickly and repeatedly study 1,800 frequently appearing kanji questions for junior high school entrance exams using a unique algorithm based on the forgetting curve. Since it uses a self-assessment method, you can tap "correct" immediately for kanji questions you know well, allowing for speedy study similar to flashcards. If you select "incorrect," the app will prioritize the question at the appropriate timing the next day and beyond, ensuring solid mastery. (Incorrect questions are presented the next day, and if answered correctly, they reappear after three days, following a forgetting curve-based algorithm.) Additionally, you can thoroughly review using the courses "Today's Incorrect Questions" and "Manually Registered Weak Questions." From version 2.0.0, you can also register your own questions! You can freely and unlimitedly register your own questions, and study them based on the forgetting curve, just like the default mastery course. About the Self-Assessment Method: This app includes a handwriting space in the answer section, but there is no automatic grading function using character recognition. You will assess yourself by looking at the answer and tapping "correct" or "incorrect." This method is used because automatic grading via character recognition: Requires handwriting for all answers, slowing down learning speed. Wastes time on questions you know perfectly. May not reflect your true ability if you write characters hesitantly. Carries a risk of incorrect judgments by the character recognition function. Since it is self-assessment, it's important to grade yourself strictly. (If unsure, it's recommended to tap "incorrect.") Learning Courses: This app includes the following learning courses: Mastery Course: This mode presents all registered kanji questions using a unique algorithm based on the forgetting curve. Each set contains 20 questions. Mastery level changes based on correct or incorrect answers. Today's Incorrect Questions: This course reviews questions you got wrong in the mastery course that day. Mastery level does not change based on correct or incorrect answers. Manually Registered Weak Questions: This course reviews questions manually registered as weak points. Mastery level does not change based on correct or incorrect answers. Premium Plan (Ad-Free): This app allows free use of all features, but subscribing to the Premium Plan removes all in-app ads. The Premium Plan is an auto-renewable subscription. About Auto-Renewal: This subscription is auto-renewable. You will be charged a specified fee every month. Payment is charged to your iTunes account (Apple ID). If canceled more than 24 hours before the end of the period, the next renewal will not occur. Cancellation should be done from the Apple ID settings in the device settings, not from within the app. Restoring Auto-Renewal: You can restore your subscription status by tapping the restore button while logged in with the Apple ID used for purchase. Terms of Use https://sites.google.com/view/shujuku-chugakukanji/terms Privacy Policy https://sites.google.com/view/shujuku-chugakukanji/privacypolicy

About

ちょこ暗 算数

Features
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「この式見たことある」「またこの答えだ!」 中受算数の頻出式に特化した暗算アプリ! ペンと紙を必要とせず、1演習30秒程度で終わるため、すきま時間にピッタリです。 「暗算」といっても、そろばん有段者が行うような高難易度の計算を行うわけではありません。 算数の途中式によく出てくる計算や約分、比を簡単にしたり、最小公倍数や最大公約数を求めたりと、 実践的な計算に絞りました。 (1) 12×5= (2) 0.125×8= (3) 4×2×3.14= (4) (6×5×4)÷(3×2×1)= (5) 24と36の最小公倍数 というように、中受算数で「あ、見たことある!」となるような計算を集めています。 ピンポイントでよく見かける式を繰り返し練習できるので、「計算速度をあげて、ケアレスミスを防ぐ」という いわゆる計算の基礎力を、効果的に身につけることができます。 ◆主な機能◆ ・難易度別に暗算を行う「暗算トライアル」 ・特定の計算や暗記に特化した「ジャンル別演習」 ・別端末でも同じ問題が出る「簡単対戦モード」 ・成長の軌跡がわかる「ランキング表示」 ◆収録問題ジャンル◆ 基本の計算 ・1桁×2桁のかけ算 ・九九の先の割り算 ・分数の足し算・引き算 他、四則演算 暗記したほうが速い計算 ・0.125の計算 ・円周率のかけ算 ・360の約分 ・平方数のかけ算 工夫する計算 ・結合の法則 ・階段の足し算 ・キセル算 ・2桁×2桁のかけ算 ・19までのかけ算(おみやげ算) よくでる計算 ・三角形の角度の計算 ・多角形の公式 ・円の面積、円周の長さを求める公式 ・比を簡単にする ・最大公約数 ・最小公倍数 ・単位換算 月額料金の支払いによって全問題が解放されますが、 基礎レベルやおすすめの単元は無料で試用できます。 ぜひ一度試してみて下さい。 価格・200円/月、800円/年 -------------- 利用規約 https://alsunny.com/termsofuse/

Screenshots

Kanji for Junior High Exam4 screens
ちょこ暗 算数4 screens

Verdict

The call

The clearest difference is ads: ちょこ暗 算数 at none against Kanji for Junior High Exam's shown. Kanji for Junior High Exam's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases 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. Kanji for Junior High Exam sells 1 in-app purchase, starting at $2.99 per month and ちょこ暗 算数 sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kanji for Junior High Exam ships an update monthly, ちょこ暗 算数 every 5 weeks. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 6 level
Kanji for Junior High Exam versus ちょこ暗 算数: the parameters behind the verdict, then further details
ParameterKanji for Junior High Examちょこ暗 算数
PriceFreeFree
Positive reviews87.5% of reviews—
Update frequencyMonthly — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size136 MB15 MB
Age rating4+4+
DeveloperMotoki TakataAlways Sunny Ltd.

In-app purchases

1 purchases

Kanji for Junior High Exam

Subscriptions1
  • 広告の非表示$2.991 Month
2 purchases

ちょこ暗 算数

Subscriptions2
  • 月額プラン7 Days trial$0.991 Month
  • 年額プラン7 Days trial$4.991 Year

Questions

Is Kanji for Junior High Exam free?
Kanji for Junior High Exam is free to download, with in-app purchases available.
Is ちょこ暗 算数 free?
ちょこ暗 算数 is free to download, with in-app purchases available.
Do Kanji for Junior High Exam or ちょこ暗 算数 have ads?
Kanji for Junior High Exam shows ads; ちょこ暗 算数 does not.
Which is updated more often, Kanji for Junior High Exam or ちょこ暗 算数?
Kanji for Junior High Exam ships an update monthly, and ちょこ暗 算数 every 5 weeks. Most recently, Kanji for Junior High Exam was updated on November 3, 2026 and ちょこ暗 算数 on October 27, 2026.

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