# Sigma 100 — A simple math addition game.

> A simple math addition game. (iPhone/iPad app by CHIEN-HUNG CHEN.)

- Source: https://appshunter.io/ios/app/sigma-100/id1562647378 (this page in markdown: same URL + `.md`)
- Developer: [CHIEN-HUNG CHEN](https://appshunter.io/developer/460805169)
- Category: Games, Casual
- Price: Free
- Age rating: 4+
- Requires: iOS 14.0 · 4 MB
- Languages: English
- Released: 2021-04-13
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/sigma-100/id1562647378/reviews.md

## What is Sigma 100?

Doing math addition by adding the numbers on the screen.
The goal is to make four 100s in a row or/and seven 100s in a column
to get higher bonus.


## Version history (last 2 releases)

### 1.1 — 2024-07-04

** Version 1.1 **
1. built by new Xcode and SDK.
2. add new number '00' for swapping numbers.
3. add  sound effects.
4. minor bug fixed.

### 1.0 — 2021-04-13

No release notes.

## Apps similar to Sigma 100

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Math the Cross Math Puzzle](https://appshunter.io/ios/app/math-the-cross-math-puzzle/id1503018793) | 4.7 (291) | Free | Games |
| [Contour: a curvy puzzle](https://appshunter.io/ios/app/contour-a-curvy-puzzle/id6445967058) | 5.0 (1) | Free | Games |
| [Fun With Dynamite](https://appshunter.io/ios/app/fun-with-dynamite/id1003066972) | 4.1 (22) | Free | Games |
| [Egg Shoot: Dynomite Bubble Gun](https://appshunter.io/ios/app/egg-shoot-dynomite-bubble-gun/id1206219709) | 4.5 (323) | Free | Games |
| [Moorhuhn X - Crazy Chicken X](https://appshunter.io/ios/app/moorhuhn-x-crazy-chicken-x/id6504603039) | 4.5 (2) | Free | Games |
| [Untie the Rings: Circle Rotate](https://appshunter.io/ios/app/untie-the-rings-circle-rotate/id6464046927) | 4.6 (372) | Free | Games |

## More apps by CHIEN-HUNG CHEN

- [Hexagon Invader](https://appshunter.io/ios/app/hexagon-invader/id1564785747)
- [Just a Maze](https://appshunter.io/ios/app/just-a-maze/id1566250907)
- [Hyper Space Defender](https://appshunter.io/ios/app/hyper-space-defender/id1569170382)
- [Fast Ball Catcher](https://appshunter.io/ios/app/fast-ball-catcher/id1580946903)
- [WIT - Where Is It](https://appshunter.io/ios/app/wit-where-is-it/id1624243049)

All apps by CHIEN-HUNG CHEN: https://appshunter.io/developer/460805169

---

*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 2026-05-15.*