# Pi 100 Challenge — Calculate Pi by Hand

> Calculate Pi by Hand (iPhone/iPad app by Ram Rao.)

- Source: https://appshunter.io/ios/app/pi-100-challenge/id6475694538 (this page in markdown: same URL + `.md`)
- Developer: [Ram Rao](https://appshunter.io/developer/1724828937)
- Category: Games, Education, Casual, Puzzle
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.0 · 11 MB
- Languages: English
- Released: 2024-02-06
- Data updated: 2026-03-24
- User reviews in markdown: https://appshunter.io/ios/app/pi-100-challenge/id6475694538/reviews.md

## What is Pi 100 Challenge?

Some people climb mountains, while others run marathons. You are challenging yourself to calculate Pi by hand. This app guides you through all the steps needed to compute Pi to 100 decimal places. Surprisingly enough, this doesn't require any complex math -- just basic addition, subtraction, multiplication and long division. Each page presents one problem to solve. Complete the problem, and move on to the next step. Take the Pi-100 Challenge, sharpen your mind, and calculate Pi.

GameCenter integration allows you to track progress and achievements. Leaderboards allow you to race against your friends to see who can finish more digits, or solve for the digits faster.


## Version history (last 3 releases)

### 1.0.2 — 2024-03-15

Bug fix to fix text layout when system text size is adjusted in IOS settings menu

### 1.0.1 — 2024-03-13

Bugfix in tutorial.

### 1.0 — 2024-02-06

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-03-24.*