# J vs ITC小芮信发

The clearest difference is update cadence: ITC小芮信发 at every 2 months against J's every 10 months. J's advantage is iOS requirement (8.0 vs 11.0). 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.

J ships an update every 10 months, ITC小芮信发 every 2 months. Both last shipped on September 8, 2026.

## The numbers

| Metric | J | ITC小芮信发 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Size | 79 MB | 35 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Beijing Xunzhong Communication Technology Co., Ltd.](https://appshunter.io/developer/821439465) | [Zhejiang Baolun Electronic Technology Co., Ltd.](https://appshunter.io/developer/1218837916) |

## What reviewers say

### J

[App page](https://appshunter.io/ios/app/j-rooms-controller/id1536553888)

**In-app purchases:** none


### ITC小芮信发

[App page](https://appshunter.io/ios/app/itc/id1577498999)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is J free?

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

### Is ITC小芮信发 free?

ITC小芮信发 is free to download, with no in-app purchases.

### Do J or ITC小芮信发 have ads?

Neither J nor ITC小芮信发 shows ads.

### Which is updated more often, J or ITC小芮信发?

J ships an update every 10 months, and ITC小芮信发 every 2 months. Most recently, J was updated on September 8, 2026 and ITC小芮信发 on September 8, 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.*