π ~ Pi Fun App. vs Fast100Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
π ~ Pi Fun App.
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This app is the ultimate app for unique people who love maths. The start-up screen plays pi to a million digits in an emo atmosphere, perfect for relaxing. Furthermore, there is a game where you can quickly enter pi for every 10, 100, 1000 - 1,000,000 digits and compete against players from all over the world for the best time! Enjoy a new entertainment experience that combines mathematics and relaxation!
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!
Screenshots
Verdict
The clearest difference is ads: Fast100Math at none against π ~ Pi Fun App.'s shown. π ~ Pi Fun App.'s advantage is update cadence (daily vs every 3 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.
π ~ Pi Fun App. ships an update daily, Fast100Math every 3 days. The most recent releases landed on September 6, 2026 and February 28, 2026 respectively.
| Parameter | π ~ Pi Fun App. | Fast100Math |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 3 days |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 17 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryo Tsudukihashi | makoto amijima |
In-app purchases
π ~ Pi Fun App.
No in-app purchases
Fast100Math
No in-app purchases
