# Alertasat vs SiApprove

The clearest difference is update cadence: SiApprove at daily against Alertasat's every 24 months. 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.

Alertasat ships an update every 24 months, SiApprove daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Alertasat | SiApprove |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Daily** |
| Size | 128 MB | 29 MB |
| Requires iOS | 16 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ALERTA SEGURANCA ELETRONICA LTDA](https://appshunter.io/developer/1651860678) | [Gustavo Rosa](https://appshunter.io/developer/6805694147) |

## What reviewers say

### Alertasat

[App page](https://appshunter.io/ios/app/alertasat/id6444069593)

**Features:** Vision Pro support

**In-app purchases:** none


### SiApprove

[App page](https://appshunter.io/ios/app/siapprove/id6805694145)

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

**In-app purchases:** none


## Frequently asked questions

### Is Alertasat free?

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

### Is SiApprove free?

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

### Do Alertasat or SiApprove have ads?

Neither Alertasat nor SiApprove shows ads.

### Which is updated more often, Alertasat or SiApprove?

Alertasat ships an update every 24 months, and SiApprove daily. Most recently, Alertasat was updated on November 3, 2026 and SiApprove on October 31, 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.*