# LinkControl vs X500 Alarm

The clearest difference is update cadence: X500 Alarm at every 3 months against LinkControl's every 18 months. X500 Alarm also leads on iOS requirement (7.0 vs 18.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

LinkControl ships an update every 18 months, X500 Alarm every 3 months. The most recent releases landed on October 24, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | LinkControl | X500 Alarm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/linkcontrol/id781651785/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 1 MB | 90 MB |
| Requires iOS | 18.6 | **7.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [River Rock Logic](https://appshunter.io/developer/340225113) | [DreamCatcher IoT Technology Ltd](https://appshunter.io/developer/1527220782) |

## What reviewers say

### LinkControl

[App page](https://appshunter.io/ios/app/linkcontrol/id781651785)

This utility app acts as an interface for controlling physical devices like lights and motors. It downloads button definitions from a server and sends button press identifiers back to the server, which then determines the action.

**Highlights:** Control lights, dimmers, and motors, Button definition downloads, Button press identification, Server-based device control, Customizable button layouts

**Features:** macOS Compatibility

**In-app purchases:** none


### X500 Alarm

[App page](https://appshunter.io/ios/app/x500-alarm/id896073690)

This app controls a wireless GSM alarm system for homes and businesses. It allows arming/disarming via phone calls or SMS, supports multiple users, and provides remote control and firmware upgrades. The system includes a loud siren and standby power.

**Highlights:** Remote arm/disarm via app, Control via free phone call/SMS, Supports multiple users/systems, Built-in 95dB siren, Exit and entry delay support, Remote firmware upgrades

**In-app purchases:** none


## Frequently asked questions

### Is LinkControl free?

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

### Is X500 Alarm free?

X500 Alarm is free to download, with no in-app purchases.

### Do LinkControl or X500 Alarm have ads?

Neither LinkControl nor X500 Alarm shows ads.

### Which is updated more often, LinkControl or X500 Alarm?

LinkControl ships an update every 18 months, and X500 Alarm every 3 months. Most recently, LinkControl was updated on October 24, 2026 and X500 Alarm on November 1, 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.*