# Robot Link vs J20

The clearest difference is update cadence: J20 at every 3 days against Robot Link's every 11 days. 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.

Robot Link ships an update every 11 days, J20 every 3 days. The most recent releases landed on September 30, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Robot Link | J20 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 3 days** |
| Size | 49 MB | 59 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Yindong Technology Co., Ltd.](https://appshunter.io/developer/1709438259) | [南京辉煌智行科技有限公司](https://appshunter.io/developer/1738384876) |

## What reviewers say

### Robot Link

[App page](https://appshunter.io/ios/app/robot-link/id6749361658)

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

**In-app purchases:** none


### J20

[App page](https://appshunter.io/ios/app/j20/id6795382293)

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

**In-app purchases:** none


## Frequently asked questions

### Is Robot Link free?

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

### Is J20 free?

J20 is free to download, with no in-app purchases.

### Do Robot Link or J20 have ads?

Neither Robot Link nor J20 shows ads.

### Which is updated more often, Robot Link or J20?

Robot Link ships an update every 11 days, and J20 every 3 days. Most recently, Robot Link was updated on September 30, 2026 and J20 on October 7, 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.*