Fast100Math vs たし算フェアリー
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fast100Math
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Have Fun Training Your Brain with the 100-Masu Calculation App! A simple yet profound app that everyone can enjoy! Improve your calculation skills while customizing your experience to match your style. ■Flexible Calculation Modes Supports addition, subtraction, and multiplication from single-digit to double-digit numbers. Choose your preferred difficulty, from 25 to 100 grids! ■Compete on the Global Leaderboard Challenge users worldwide and compete for the highest score! Aim for the top with your 10 × 10 records. ■Various Input Methods Supports voice and handwriting inputs. Choose the method that suits you best. ■Customizable Appearance Personalize your app by adjusting background colors, text colors, and fonts. Create your very own design and enjoy! ■Accessibility Features With VoiceOver support, you can solve math problems using audio assistance without relying on visuals. Step into the world of brain training! Boost your scores with 100-Masu calculations and aim for the top of the global leaderboard. Experience the joy of improving your calculation skills today!
たし算フェアリー
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光のフェアリーと学ぶたし算アプリ。1〜3年生のたし算が楽しく身につきます。
Screenshots
Verdict
The clearest difference is update cadence: Fast100Math at every 3 days against たし算フェアリー's fortnightly. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Fast100Math ships an update every 3 days, たし算フェアリー fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | Fast100Math | たし算フェアリー |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 31 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | makoto amijima | Seiji Kinoshita |
In-app purchases
Fast100Math
No in-app purchases
たし算フェアリー
No in-app purchases









