# GSM vs Silarius

The clearest difference is review sentiment: Silarius at 100% against GSM's 17%. Silarius also leads on rating (4.8 vs 2.3) and ratings volume (18 vs 3). GSM's advantage is iOS requirement (7.0 vs 15.0). 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.

Silarius holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: Silarius has 18 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 17% of GSM's written reviews are positive against 100% of Silarius's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | GSM | Silarius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/gsm-relay/id595567537/reviews) | **[4.8 (18 ratings)](https://appshunter.io/ios/app/silarius/id1545373631/reviews)** |
| Number of ratings | 3 | **18** |
| Positive reviews | 16.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 3 MB | 26 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [艳丽 刘](https://appshunter.io/developer/595252190) | [Silarius LLC](https://appshunter.io/developer/1545373633) |

## What reviewers say

### GSM

[App page](https://appshunter.io/ios/app/gsm-relay/id595567537)

Control industrial devices remotely via SMS commands. This application allows users to send text messages to a specific GSM-RELAY unit for remote operation and parameter configuration. Requires a WAFER GSM-RELAY hardware unit to function.

**Highlights:** Seven channels remote control, Send SMS for remote control, Remote parameter configuration, Industrial control applications, Requires WAFER GSM-RELAY unit

**Features:** macOS Compatibility

**In-app purchases:** none


### Silarius

[App page](https://appshunter.io/ios/app/silarius/id1545373631)

This app offers comprehensive IT, AV, and surveillance solutions for businesses of all sizes. It provides cost-effective services to enhance business value and protect assets across various industries.

**Highlights:** IT solutions, AV solutions, Surveillance solutions, Business asset protection, Cost-effective services, Comprehensive offerings

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

**In-app purchases:** none


## Frequently asked questions

### Is GSM free?

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

### Is Silarius free?

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

### Which has better reviews, GSM or Silarius?

Silarius is rated higher. GSM averages 2.3 out of 5 from 3 ratings, while Silarius averages 4.8 from 18 ratings.

### Do GSM or Silarius have ads?

Neither GSM nor Silarius shows ads.

### Which is updated more often, GSM or Silarius?

GSM ships an update every 2 months, and Silarius every 2 months. Most recently, GSM was updated on November 1, 2026 and Silarius on November 3, 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.*