# QIoT Link vs Protech SMS Alarm

The clearest difference is update cadence: Protech SMS Alarm at every 2 months against QIoT Link's every 7 months. QIoT Link's advantage is iOS requirement (10.0 vs 16.6). 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.

QIoT Link ships an update every 7 months, Protech SMS Alarm every 2 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | QIoT Link | Protech SMS Alarm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Size | 12 MB | 7 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Queclink Wireless Solutions Co.,Ltd](https://appshunter.io/developer/1529091210) | [Portman Electronics Ltd.](https://appshunter.io/developer/375916100) |

## What reviewers say

### QIoT Link

[App page](https://appshunter.io/ios/app/qiot-link/id1540207059)

**Features:** macOS Compatibility

**In-app purchases:** none


### Protech SMS Alarm

[App page](https://appshunter.io/ios/app/protech-sms-alarm/id6758430371)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QIoT Link free?

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

### Is Protech SMS Alarm free?

Protech SMS Alarm is free to download, with no in-app purchases.

### Do QIoT Link or Protech SMS Alarm have ads?

Neither QIoT Link nor Protech SMS Alarm shows ads.

### Which is updated more often, QIoT Link or Protech SMS Alarm?

QIoT Link ships an update every 7 months, and Protech SMS Alarm every 2 months. Most recently, QIoT Link was updated on October 27, 2026 and Protech SMS Alarm on October 28, 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.*