# Mech Fly vs Circus Run

The clearest difference is ads: Circus Run at none against Mech Fly's shown. Circus Run also leads on update cadence (every 2 weeks vs every 29 months). 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.

Mech Fly ships an update every 29 months, Circus Run every 2 weeks. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Mech Fly | Circus Run |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 29 months | **Every 2 weeks** |
| Size | 76 MB | 185 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [omer cetin](https://appshunter.io/developer/1584332419) | [Korean Kids Ahead of The World Company](https://appshunter.io/developer/1498359937) |

## What reviewers say

### Mech Fly

[App page](https://appshunter.io/ios/app/mech-fly/id1611133729)

**Features:** macOS Compatibility

**In-app purchases:** none


### Circus Run

[App page](https://appshunter.io/ios/app/circus-run/id6472778445)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mech Fly free?

Mech Fly is free to download, with no in-app purchases.

### Is Circus Run free?

Circus Run is free to download, with no in-app purchases.

### Do Mech Fly or Circus Run have ads?

Mech Fly shows ads; Circus Run does not.

### Which is updated more often, Mech Fly or Circus Run?

Mech Fly ships an update every 29 months, and Circus Run every 2 weeks. Most recently, Mech Fly was updated on October 12, 2026 and Circus Run on October 3, 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.*