Comparison

あかほん! プロトタイプA vs Calculus Gacha!

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

Head to head
About

あかほん! プロトタイプA

This app uses a unique story-driven approach to help users learn calculus concepts like differentiation. Follow characters through engaging dialogues that explain complex math topics at your own pace.

Highlights
  • Story-driven learning
  • Interactive dialogues
  • Calculus concepts (differentiation)
  • Character-based guidance
  • NOVELICA system
  • Self-paced learning
Features
Read full description

勉強ともっと仲良くなれる学習支援アプリ あかほん! あかほん! プロトタイプA -微分・積分編- は愉快なキャラクターと一緒に数学の勉強をしていくショートストーリーが読めるアプリです。 勉強って自分との戦いだけれど、気を詰めすぎて疲れてしまう 一緒に勉強をしてくれる仲間がほしい そんなあなたにこのアプリはぴったりです! -ストーリー- 主人公のシキネは偏差値18の高校3年生、このままでは受験に失敗すると悩んでいました。 そこで飛び級小学生と噂される小柄な女の子スウに数学を教えてもらうことにしました。 「飛び級でも小学生でもない」と最初は怒られてしまいますが、スウは優しいので勉強を教えてくれました。 スウは大好きな数学について語るのがとてもても楽しく、まんざらでもなかったのです。 シキネもわからないなりにスウの楽しげな話を聞いて、少しずつ理解を深めていきます。 今回の話題は微分。微分って一体何なんでしょうか?? このアプリは新開発されたNOVELICAというシステムで動いています。 動画のように進みつつも、大事なところでは待ってくれたり、問いかけてくれます。 会話の聞き返しやスキップは動画よりも直感的。 自分のペースで2人の会話を楽しみながら、いつの間にか数学の知識が身についている、そんなアプリです。 2人との勉強をお楽しみください!

About

Calculus Gacha!

Features
Read full description

● Fun, Gacha-Style Learning Tackle randomly selected questions and instantly check explanations and formulas as you go. ●AI Tutor Stuck on a problem? Ask the built-in AI tutor for a hint, a solving strategy, just the first step, or an explanation using a simpler similar problem — all tailored to the question you're working on. ● Learn by Topic Integration, limits, factorization, indeterminate equations, recurrence relations, differential equations, and more. Each topic is organized into categories so you can focus on exactly what you want to study. ● Helpful Support Features Hints, scratch paper, a timer, and other tools make learning smoother and more efficient. ● Automatic Study Tracking All solved questions are saved on your device, allowing you to review your progress and understanding anytime. ● Smart Question Selection Based on your learning history, the app prioritizes topics you struggle with, helping you learn more efficiently. --------------------------- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.notion.so/calculus-gacha-joy-math-27ae4f0afd3b80cb9754ce138cbc80ca?source=copy_link

Screenshots

あかほん! プロトタイプA4 screens
Calculus Gacha!4 screens

Verdict

The call

The clearest difference is in-app purchases: あかほん! プロトタイプA at none against Calculus Gacha!'s 3. あかほん! プロトタイプA also leads on iOS requirement (7.0 vs 15.0). Calculus Gacha!'s advantage is update cadence (every 3 days vs every 4 weeks). On price, ads 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. Calculus Gacha! sells 3 one-off in-app purchases. あかほん! プロトタイプA asks for nothing beyond the download.

UpkeepUpdate frequency

あかほん! プロトタイプA ships an update every 4 weeks, Calculus Gacha! every 3 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 6 level
あかほん! プロトタイプA versus Calculus Gacha!: the parameters behind the verdict, then further details
Parameterあかほん! プロトタイプACalculus Gacha!
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better15.0
Further details — not scored
Size88 MB83 MB
Age rating4+4+
DeveloperNobumitsu ShikineShunsuke Nakamura

In-app purchases

None

あかほん! プロトタイプA

No in-app purchases

3 purchases

Calculus Gacha!

One-time3
  • 不定方程式ガチャ利用オプション$0.99
  • AI Tutor Plus(500)$2.99
  • 履歴管理機能オプション$2.99

Questions

Is あかほん! プロトタイプA free?
あかほん! プロトタイプA is free to download, with no in-app purchases.
Is Calculus Gacha! free?
Calculus Gacha! is free to download, with in-app purchases available.
Do あかほん! プロトタイプA or Calculus Gacha! have ads?
Neither あかほん! プロトタイプA nor Calculus Gacha! shows ads.
Which is updated more often, あかほん! プロトタイプA or Calculus Gacha!?
あかほん! プロトタイプA ships an update every 4 weeks, and Calculus Gacha! every 3 days. Most recently, あかほん! プロトタイプA was updated on October 8, 2026 and Calculus Gacha! on October 11, 2026.

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