Comparison

倍数plane vs π Pi Challenge

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

Head to head

Master the digits of Pi

Free

📚 Education

No ratingsView app →

About

倍数plane

Features

Read full description

『飛行機（plane）を左右に操作して倍数をキャッチしよう』飛行機を左右にドラッグして操作し、倍数（雲）をキャッチしましょう倍数をキャッチすると得点が増えます大きな倍数ほど高得点になります倍数でない数をキャッチするとミスになります５回ミスするとゲームオーバーです倍数を10個キャッチすると、風船アイテムが出現します風船アイテムは５種類です　赤：ヒントアイテム：倍数がわかりやすくなるよ　橙：大きさアイテム：雲の大きさが同じになるよ　黄：速さアイテム：速度がゆっくり一定になるよ　緑：大量アイテム：倍数の数だけが出るようになるよ　青：無敵アイテム：ミスが０になって無敵になるよ風船アイテムは風でゆらゆらするので、上手にキャッチしましょう

About

π Pi Challenge

Features

Read full description

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

倍数plane3 screens

π Pi Challenge2 screens

Verdict

The call

The clearest difference is in-app purchases: 倍数plane at none against π Pi Challenge's 1. 倍数plane also leads on ads (none vs shown). π Pi Challenge's advantage is update cadence (every 2 months vs every 6 months) and iOS requirement (13.0 vs 15.0). On price 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. π Pi Challenge sells 1 in-app purchase, starting at $0.99 per month. 倍数plane asks for nothing beyond the download.

UpkeepUpdate frequency

倍数plane ships an update every 6 months, π Pi Challenge every 2 months. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 2 level

倍数plane versus π Pi Challenge: the parameters behind the verdict, then further details
Parameter	倍数plane	π Pi Challenge
Price	Free	Free
Update frequency	Every 6 months	Every 2 months — better
Ads	No — better	Yes
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0	13.0 — better
Further details — not scored
Size	58 MB	73 MB
Age rating	9+	4+
Developer	Hiroyuki Nakano	SIC Company Limited

In-app purchases

None

倍数plane

No in-app purchases

1 purchases

π Pi Challenge

Subscriptions1

Monthly Subscription$0.991 Month

Questions

Is 倍数plane free?

倍数plane is free to download, with no in-app purchases.

Is π Pi Challenge free?

π Pi Challenge is free to download, with in-app purchases available.

Do 倍数plane or π Pi Challenge have ads?

π Pi Challenge shows ads; 倍数plane does not.

Which is updated more often, 倍数plane or π Pi Challenge?

倍数plane ships an update every 6 months, and π Pi Challenge every 2 months. Most recently, 倍数plane was updated on September 24, 2026 and π Pi Challenge on September 18, 2026.