# Sky Theory vs Fast Dodge

The clearest difference is update cadence: Fast Dodge at daily against Sky Theory's every 21 months. Sky Theory's advantage is iOS requirement (7.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Sky Theory ships an update every 21 months, Fast Dodge daily. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Sky Theory | Fast Dodge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Daily** |
| Size | 265 MB | 25 MB |
| Requires iOS | **7.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [More Mountains](https://appshunter.io/developer/1094758420) | [JONGMIN CHOI](https://appshunter.io/developer/1871461547) |

## What reviewers say

### Sky Theory

[App page](https://appshunter.io/ios/app/sky-theory/id1094780926)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fast Dodge

[App page](https://appshunter.io/ios/app/fast-dodge-reflex-test/id6758209495)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sky Theory free?

Sky Theory is free to download, with no in-app purchases.

### Is Fast Dodge free?

Fast Dodge is free to download, with no in-app purchases.

### Do Sky Theory or Fast Dodge have ads?

Neither Sky Theory nor Fast Dodge shows ads.

### Which is updated more often, Sky Theory or Fast Dodge?

Sky Theory ships an update every 21 months, and Fast Dodge daily. Most recently, Sky Theory was updated on October 12, 2026 and Fast Dodge on October 25, 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.*