# XT UART vs CheckBlue

The clearest difference is update cadence: CheckBlue at every 2 weeks against XT UART's every 4 months. CheckBlue also leads on iOS requirement (8.0 vs 13.0). 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.

XT UART ships an update every 4 months, CheckBlue every 2 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | XT UART | CheckBlue |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 6 MB | 21 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Lanke Xuntong Technology Co., Ltd.](https://appshunter.io/developer/640898259) | [Shenzhen Meeblue Electronics Technology Co., Ltd.](https://appshunter.io/developer/1491877622) |

## What reviewers say

### XT UART

[App page](https://appshunter.io/ios/app/xt-uart/id1448659811)

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

**In-app purchases:** none


### CheckBlue

[App page](https://appshunter.io/ios/app/checkblue/id1491877623)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is XT UART free?

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

### Is CheckBlue free?

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

### Do XT UART or CheckBlue have ads?

Neither XT UART nor CheckBlue shows ads.

### Which is updated more often, XT UART or CheckBlue?

XT UART ships an update every 4 months, and CheckBlue every 2 weeks. Most recently, XT UART was updated on October 16, 2026 and CheckBlue on October 14, 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.*