# KeySync vs Function

The clearest difference is iOS requirement: Function at 15.1 against KeySync's 18.2. 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.

## The numbers

| Metric | KeySync | Function |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Size | 3 MB | 23 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Olav Gausaker](https://appshunter.io/developer/639406755) | [Rahul Gautam](https://appshunter.io/developer/6801599142) |

## What reviewers say

### KeySync

[App page](https://appshunter.io/ios/app/keysync/id6743862609)

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

**In-app purchases:** none


### Function

[App page](https://appshunter.io/ios/app/function-vendor-manager/id6801599140)

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

**In-app purchases:** none


## Frequently asked questions

### Is KeySync free?

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

### Is Function free?

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

### Do KeySync or Function have ads?

Neither KeySync nor Function 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.*