# Alert A+ vs SIAT Monterrey

The clearest difference is update cadence: Alert A+ at every 2 days against SIAT Monterrey's weekly. 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.

Alert A+ ships an update every 2 days, SIAT Monterrey weekly. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Alert A+ | SIAT Monterrey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Size | 64 MB | 18 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ahumaro Mendoza](https://appshunter.io/developer/1610476464) | [Soluciones SIG SA de CV](https://appshunter.io/developer/1587380728) |

## What reviewers say

### Alert A+

[App page](https://appshunter.io/ios/app/alert-a-plus/id6443860578)

**Features:** macOS Compatibility

**In-app purchases:** none


### SIAT Monterrey

[App page](https://appshunter.io/ios/app/siat-monterrey/id6743516103)

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

**In-app purchases:** none


## Frequently asked questions

### Is Alert A+ free?

Alert A+ is free to download, with no in-app purchases.

### Is SIAT Monterrey free?

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

### Do Alert A+ or SIAT Monterrey have ads?

Neither Alert A+ nor SIAT Monterrey shows ads.

### Which is updated more often, Alert A+ or SIAT Monterrey?

Alert A+ ships an update every 2 days, and SIAT Monterrey weekly. Most recently, Alert A+ was updated on November 3, 2026 and SIAT Monterrey on October 25, 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.*