# AlertaMobile vs Extrema

AlertaMobile and Extrema are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AlertaMobile ships an update every 2 months, Extrema monthly. The most recent releases landed on June 4, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | AlertaMobile | Extrema |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 110 MB | 114 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alerta Seguranca Eletronica e Rastreamento Ltda](https://appshunter.io/developer/1483456681) | [EXTREMA COMERCIO E MANUTENCAO DE EQUIPAMENTOS ELETRONICOS LTDA](https://appshunter.io/developer/1462909063) |

## What reviewers say

### AlertaMobile

[App page](https://appshunter.io/ios/app/alertamobile/id1287594973)

Monitor your security system remotely from your phone or tablet. Check alarm status, arm/disarm, view live camera feeds, and manage service orders. You can also make calls to registered contacts.

**Highlights:** Monitor alarm status, Arm and disarm system, View live camera feeds, Check events and service orders, Call registered contacts

**Features:** macOS Compatibility

**In-app purchases:** none


### Extrema

[App page](https://appshunter.io/ios/app/extrema/id1304456690)

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

**In-app purchases:** none


## Frequently asked questions

### Is AlertaMobile free?

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

### Is Extrema free?

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

### Do AlertaMobile or Extrema have ads?

Neither AlertaMobile nor Extrema shows ads.

### Which is updated more often, AlertaMobile or Extrema?

AlertaMobile ships an update every 2 months, and Extrema monthly. Most recently, AlertaMobile was updated on June 4, 2026 and Extrema on September 16, 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.*