# Sigma 100 vs Endless Cat Runner

The clearest difference is in-app purchases: Sigma 100 at none against Endless Cat Runner's 4. Endless Cat Runner's advantage is update cadence (every 7 months vs every 39 months) and iOS requirement (12.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. Endless Cat Runner sells 4 one-off in-app purchases. Sigma 100 asks for nothing beyond the download.

Sigma 100 ships an update every 39 months, Endless Cat Runner every 7 months. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Sigma 100 | Endless Cat Runner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 39 months | **Every 7 months** |
| Size | 4 MB | 178 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CHIEN-HUNG CHEN](https://appshunter.io/developer/460805169) | [Nazir Ahmad](https://appshunter.io/developer/1172299901) |

## What reviewers say

### Sigma 100

[App page](https://appshunter.io/ios/app/sigma-100/id1562647378)

**Features:** macOS Compatibility

**In-app purchases:** none


### Endless Cat Runner

[App page](https://appshunter.io/ios/app/endless-cat-runner/id6463489443)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 Coin | $0.99 | one-time |
| 3000 Coin | $2.99 | one-time |
| 100 Premium | $3.99 | one-time |
| 200 Premium | $4.99 | one-time |


## Frequently asked questions

### Is Sigma 100 free?

Sigma 100 is free to download, with no in-app purchases.

### Is Endless Cat Runner free?

Endless Cat Runner is free to download, with in-app purchases available.

### Do Sigma 100 or Endless Cat Runner have ads?

Both Sigma 100 and Endless Cat Runner show ads.

### Which is updated more often, Sigma 100 or Endless Cat Runner?

Sigma 100 ships an update every 39 months, and Endless Cat Runner every 7 months. Most recently, Sigma 100 was updated on October 15, 2026 and Endless Cat Runner on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*