# Running Sphere vs Wiggle Worm

The clearest difference is ads: Running Sphere at none against Wiggle Worm's shown. Wiggle Worm's advantage is update cadence (every 3 days vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Running Sphere ships an update every 6 weeks, Wiggle Worm every 3 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Running Sphere | Wiggle Worm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Size | 22 MB | 146 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ruben Velasco](https://appshunter.io/developer/1549457866) | [Dipayon Debnath Dip](https://appshunter.io/developer/1566993708) |

## What reviewers say

### Running Sphere

[App page](https://appshunter.io/ios/app/running-sphere/id1637336193)

**In-app purchases:** none


### Wiggle Worm

[App page](https://appshunter.io/ios/app/wiggle-worm-puzzle-quest/id6786324536)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Running Sphere free?

Running Sphere is free to download, with no in-app purchases.

### Is Wiggle Worm free?

Wiggle Worm is free to download, with no in-app purchases.

### Do Running Sphere or Wiggle Worm have ads?

Wiggle Worm shows ads; Running Sphere does not.

### Which is updated more often, Running Sphere or Wiggle Worm?

Running Sphere ships an update every 6 weeks, and Wiggle Worm every 3 days. Most recently, Running Sphere was updated on October 25, 2026 and Wiggle Worm on October 31, 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.*