s*カルク vs AI Tutor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
s*カルク
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「s*カルク」は、算数の学習に特化したまったく新しいコンセプトの電卓アプリです。 通常の計算はもちろん、学習の中でつまずきやすい「分数」や「あまりのある割り算」、さらには「概数(およその数)」まで、直感的な操作で簡単に計算・表示することができます。 ただ答えを出すだけでなく、結果を「どのように表すか」を子どもたち自身が選べるため、STEAM教育や日々の学習における「数への理解」や「思考力」を育むツールとして最適です。 【主な機能】 ・算数の授業に直結した多彩な表示モード ・分数モード: 計算結果を「帯分数」と「仮分数」でワンタッチ切り替え。 ・あまり計算モード: 割り算の答えを、少数ではなく「商と余り(例:3…2)」で表示。 ・概数モード: 「上から1桁」「千の位」など、指定した位で四捨五入したおよその数を瞬時に表示。 【直感的で使いやすいUI】 ・専用キー: 「π」や「%」、「√」はもちろん、累乗(x^y)も簡単入力。 ・サポート機能: 計算の履歴(リレキ)表示や、数値を一時保存できるメモリー(キオク)機能を搭載。計算結果のワンタップコピーにも対応しています。 ・どの端末でも美しいフル・レスポンシブデザイン iPhoneの縦画面・横画面、iPadの大きな画面など、お使いの端末に合わせてボタンのサイズやレイアウトが極限まで自動最適化されます。いつでもどこでも、美しく快適な操作性を実現しました。 【こんな方におすすめ!】 ・算数の宿題や答え合わせを自分で楽しく進めたい小学生 ・ICTを活用した新しい授業づくりや教育DXに取り組む先生方 ・ご家庭で子どもの学習をスマートにサポートしたい保護者の方 教育現場の実践とアイデアが詰まった「s*カルク」で、毎日の算数をもっと面白く、もっと直感的に体験しよう!
AI Tutor
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AI Tutor is a math homework helper and study buddy that never just hands you the answer. Snap a photo of a math problem, and your AI math tutor reads it and asks you step-by-step questions until you solve it yourself, the way a great math tutor does. WHY STUDENTS AND PARENTS CHOOSE IT • Math homework help for grade 1 to grade 12: elementary math, middle school math, high school math, algebra 1, pre-algebra, geometry and word problems • Step by step math, not a math solver: the tutor gives hints, checks your work and asks the next question • Scan math problems with the camera or pick a photo; handwriting and several problems in one picture are fine • Snap your written work: the tutor points to the exact line that went wrong and keeps guiding • Answer by typing, by voice, or by handwriting on the iPad scratchpad • Stuck? Ask for a hint, say "I'm stuck", or get a short lesson that re-explains the concept with a new example • Animated visuals for fractions, geometry, number lines and bar models • Your study buddy Pi, a little dog in a graduation cap, waves, thinks along and celebrates every correct step TOPICS COVERED Fractions, decimals, percent, ratio and proportion, equations, algebra, geometry, area and perimeter, word problems, arithmetic and mental math, functions, statistics and probability, exam prep. FOR PARENTS Help kids with math even if you have forgotten how. Use it as a math checker for finished homework, or let the app sit with your child while you cook. The parent report shows problems done, time spent, how much was solved without help, and the skills that need practice. Share it with one tap. LEARN MATH BETTER The tutor remembers where your child usually trips up and brings it back at the right moment in the next problem. Every session ends with a summary of the concepts used, so learning math sticks instead of copying answers. LANGUAGES English, Vietnamese, French, Chinese, Japanese and Korean. The tutor teaches in the language of the problem. BY GRADE Grade 1, grade 2, grade 3, grade 4, grade 5 (elementary math), grade 6, grade 7, grade 8 (middle school math, pre-algebra), grade 9, grade 10, grade 11, grade 12 (algebra 1, algebra 2, geometry, precalculus). Also used for homeschool math, summer math practice, math test prep and catching up after a missed class. FREE Unlimited problems. No sign-in required to start. Sign in to keep your progress across devices. AI Tutor is the homework app for students who want to actually understand math, and for parents who want more than a photo math answer key.
Screenshots
Verdict
The clearest difference is ads: s*カルク at none against AI Tutor's shown. AI Tutor's advantage is update cadence (daily vs every 5 days). On price, in-app purchases, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
s*カルク ships an update every 5 days, AI Tutor daily. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.
| Parameter | s*カルク | AI Tutor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Seigo Mizouchi | Manh Toan Nguyen |
In-app purchases
s*カルク
No in-app purchases
AI Tutor
No in-app purchases









