# Masterseg vs AlarmSystems

The clearest difference is iOS requirement: AlarmSystems at 13.4 against Masterseg's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Masterseg ships an update monthly, AlarmSystems every 2 months. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Masterseg | AlarmSystems |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 111 MB | 109 MB |
| Requires iOS | 15.1 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [R.P.D TECNOLOGIA EM SEGURANCA LTDA](https://appshunter.io/developer/1461792752) | [ALARM SYSTEMS - COMERCIO DE SISTEMAS DE ALARMES EIRELI](https://appshunter.io/developer/1477057808) |

## What reviewers say

### Masterseg

[App page](https://appshunter.io/ios/app/masterseg/id1228804256)

**Features:** macOS Compatibility

**In-app purchases:** none


### AlarmSystems

[App page](https://appshunter.io/ios/app/alarmsystems/id1287593838)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Masterseg free?

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

### Is AlarmSystems free?

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

### Do Masterseg or AlarmSystems have ads?

Neither Masterseg nor AlarmSystems shows ads.

### Which is updated more often, Masterseg or AlarmSystems?

Masterseg ships an update monthly, and AlarmSystems every 2 months. Most recently, Masterseg was updated on September 17, 2026 and AlarmSystems on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*