# Spin vs YYi Calculator

The clearest difference is device support: YYi Calculator at 3 against Spin's 1. YYi Calculator also leads on iOS requirement (16.6 vs 26.0). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Spin | YYi Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 8 days |
| Size | 2 MB | 6 MB |
| Requires iOS | 26.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Lyra Tech](https://appshunter.io/developer/1836528013) | [才新 高](https://appshunter.io/developer/6797358616) |

## What reviewers say

### Spin

[App page](https://appshunter.io/ios/app/spin-make-decisions/id6759580313)

**Features:** macOS Compatibility

**In-app purchases:** none


### YYi Calculator

[App page](https://appshunter.io/ios/app/yyi-calculator/id6797376510)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spin free?

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

### Is YYi Calculator free?

YYi Calculator is free to download, with no in-app purchases.

### Do Spin or YYi Calculator have ads?

Neither Spin nor YYi Calculator shows ads.

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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.*