# FatalSpin vs Happy Polygon

The clearest difference is iOS requirement: FatalSpin at 16.0 against Happy Polygon's 26.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. FatalSpin sells 7 one-off in-app purchases and Happy Polygon sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 6 days. Both last shipped on November 6, 2026.

## The numbers

| Metric | FatalSpin | Happy Polygon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 days | Every 6 days |
| Size | 161 MB | 25 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 9+ |
| Developer | [DLX STUDIO](https://appshunter.io/developer/6796137630) | [LAP WAI HSU](https://appshunter.io/developer/6795877907) |

## What reviewers say

### FatalSpin

[App page](https://appshunter.io/ios/app/fatalspin/id6796137628)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gift1 | $0.99 | one-time |
| Gift2 | $1.99 | one-time |
| Gift3 | $2.99 | one-time |
| Gift4 | $3.99 | one-time |
| Gift5 | $4.99 | one-time |
| Gift6 | $6.99 | one-time |
| Gift7 | $10.99 | one-time |


### Happy Polygon

[App page](https://appshunter.io/ios/app/happy-polygon/id6800785467)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BUY IT_099 | $0.99 | one-time |


## Frequently asked questions

### Is FatalSpin free?

FatalSpin is free to download, with in-app purchases available.

### Is Happy Polygon free?

Happy Polygon is free to download, with in-app purchases available.

### Do FatalSpin or Happy Polygon have ads?

Both FatalSpin and Happy Polygon show ads.

### Which is updated more often, FatalSpin or Happy Polygon?

FatalSpin ships an update every 6 days, and Happy Polygon every 6 days. Most recently, FatalSpin was updated on November 6, 2026 and Happy Polygon on November 6, 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.*