# FOCUS vs Four

The clearest difference is update cadence: FOCUS at monthly against Four's every 2 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.

FOCUS ships an update monthly, Four every 2 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | FOCUS | Four |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (3 ratings)](https://appshunter.io/ios/app/focus-el/id1155997836/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 11 MB | 58 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [moztec](https://appshunter.io/developer/932993004) | [Xiamen Sixin IoT Technology Co., Ltd.](https://appshunter.io/developer/1438611291) |

## What reviewers say

### FOCUS

[App page](https://appshunter.io/ios/app/focus-el/id1155997836)

This application allows users to easily control compatible home alarm systems with GSM switches. It automates the process of sending SMS commands, eliminating the need for manual text input.

**Highlights:** Remote system control, GSM switch integration, Automated SMS commands, Easy alarm activation/deactivation

**Features:** macOS Compatibility

**In-app purchases:** none


### Four

[App page](https://appshunter.io/ios/app/four-faith-sensor-cloud/id6451084198)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FOCUS free?

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

### Is Four free?

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

### Do FOCUS or Four have ads?

Neither FOCUS nor Four shows ads.

### Which is updated more often, FOCUS or Four?

FOCUS ships an update monthly, and Four every 2 months. Most recently, FOCUS was updated on October 24, 2026 and Four on October 14, 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.*