# GSM Socket V3 vs engcon DC3

The clearest difference is update cadence: engcon DC3 at every 2 months against GSM Socket V3's every 16 months. GSM Socket V3's advantage is iOS requirement (8.0 vs 15.0). 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.

GSM Socket V3 ships an update every 16 months, engcon DC3 every 2 months. Both last shipped on September 18, 2026.

## The numbers

| Metric | GSM Socket V3 | engcon DC3 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 19 MB | 23 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [先良 谢](https://appshunter.io/developer/1518517860) | [Engcon Nordic AB](https://appshunter.io/developer/1612669316) |

## What reviewers say

### GSM Socket V3

[App page](https://appshunter.io/ios/app/gsm-socket-v3/id1606923701)

Control and configure GSM power sockets remotely via SMS commands. This utility app automates SMS content editing and submission for seamless operation of compatible devices.

**Highlights:** SMS command automation, Remote socket configuration, Compatibility with SimPal models, Easy operation interface, Automated SMS content editing

**Features:** macOS Compatibility

**In-app purchases:** none


### engcon DC3

[App page](https://appshunter.io/ios/app/engcon-dc3/id1612669314)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GSM Socket V3 free?

GSM Socket V3 is free to download, with no in-app purchases.

### Is engcon DC3 free?

engcon DC3 is free to download, with no in-app purchases.

### Do GSM Socket V3 or engcon DC3 have ads?

Neither GSM Socket V3 nor engcon DC3 shows ads.

### Which is updated more often, GSM Socket V3 or engcon DC3?

GSM Socket V3 ships an update every 16 months, and engcon DC3 every 2 months. Most recently, GSM Socket V3 was updated on September 18, 2026 and engcon DC3 on September 18, 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.*