# Sentinel Pro vs IoT Aqualarm Pro

The clearest difference is iOS requirement: IoT Aqualarm Pro at 10.0 against Sentinel Pro's 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.

## The numbers

| Metric | Sentinel Pro | IoT Aqualarm Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 3 MB | 111 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ben Software Ltd](https://appshunter.io/developer/1142125927) | [Sentient Technology Co. Limited](https://appshunter.io/developer/1598329454) |

## What reviewers say

### Sentinel Pro

[App page](https://appshunter.io/ios/app/sentinel-pro/id1581444500)

**Features:** macOS Compatibility

**In-app purchases:** none


### IoT Aqualarm Pro

[App page](https://appshunter.io/ios/app/iot-aqualarm-pro/id6443495186)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sentinel Pro free?

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

### Is IoT Aqualarm Pro free?

IoT Aqualarm Pro is free to download, with no in-app purchases.

### Do Sentinel Pro or IoT Aqualarm Pro have ads?

Neither Sentinel Pro nor IoT Aqualarm Pro shows ads.

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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.*