π ~ Pi Fun App. vs π Pi Challenge
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!
π Pi Challenge
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An app for memorizing the digits of Pi. It supports up to 30 million digits… totally unnecessary, but fun. Comes with a ranking feature! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: π ~ Pi Fun App. at none against π Pi Challenge's 1. π ~ Pi Fun App. also leads on update cadence (daily vs every 2 months). π Pi Challenge's advantage is iOS requirement (13.0 vs 17.0). 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
Both are free to download. π Pi Challenge sells 1 in-app purchase, starting at $0.99 per month. π ~ Pi Fun App. asks for nothing beyond the download.
π ~ Pi Fun App. ships an update daily, π Pi Challenge every 2 months. The most recent releases landed on September 6, 2026 and September 18, 2026 respectively.
| Parameter | π ~ Pi Fun App. | π Pi Challenge |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 2 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryo Tsudukihashi | SIC Company Limited |
In-app purchases
π ~ Pi Fun App.
No in-app purchases
π Pi Challenge
- Monthly Subscription$0.991 Month
Questions
Is π ~ Pi Fun App. free?
Is π Pi Challenge free?
Do π ~ Pi Fun App. or π Pi Challenge have ads?
Which is updated more often, π ~ Pi Fun App. or π Pi Challenge?
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