# KooSync vs Grasfeel

The clearest difference is iOS requirement: Grasfeel at 14.0 against KooSync's 16.0. On price, update cadence, 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.

KooSync ships an update every 3 weeks, Grasfeel monthly. The most recent releases landed on September 20, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | KooSync | Grasfeel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (8 ratings)](https://appshunter.io/ios/app/grasfeel/id6752573293/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Free |
| Size | 150 MB | 99 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [宇森 吴](https://appshunter.io/developer/1837612323) | [可贞 毛](https://appshunter.io/developer/1820869373) |

## What reviewers say

### KooSync

[App page](https://appshunter.io/ios/app/koosync/id6752115401)

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

**In-app purchases:** none


### Grasfeel

[App page](https://appshunter.io/ios/app/grasfeel/id6752573293)

This application connects with purchased devices to offer users an exciting experience. It's designed for those who have acquired compatible hardware. Get ready to explore new possibilities with this innovative tool.

**Highlights:** Device linking, Enhanced user experience, Exciting new possibilities, Compatible hardware integration

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

**In-app purchases:** none


## Frequently asked questions

### Is KooSync free?

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

### Is Grasfeel free?

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

### Do KooSync or Grasfeel have ads?

Neither KooSync nor Grasfeel shows ads.

### Which is updated more often, KooSync or Grasfeel?

KooSync ships an update every 3 weeks, and Grasfeel monthly. Most recently, KooSync was updated on September 20, 2026 and Grasfeel on September 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.*