# GSMKEY vs RF Writer

The clearest difference is update cadence: RF Writer at monthly against GSMKEY's every 8 months. GSMKEY's advantage is iOS requirement (6.0 vs 14.0). 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.

GSMKEY ships an update every 8 months, RF Writer monthly. The most recent releases landed on June 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | GSMKEY | RF Writer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/gsmkey/id595251747/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Free | — |
| Size | 3 MB | 23 MB |
| Requires iOS | **6.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [艳丽 刘](https://appshunter.io/developer/595252190) | [Consortium Services, LLC](https://appshunter.io/developer/638883949) |

## What reviewers say

### GSMKEY

[App page](https://appshunter.io/ios/app/gsmkey/id595251747)

Control electric gates and automatic doors remotely by sending SMS commands. This application also allows for the configuration of device parameters. It is compatible with specific GSM-KEY products.

**Highlights:** Remote gate and door control via SMS, Device parameter configuration, SMS command sending, Compatibility with GSM-KEY products

**Features:** macOS Compatibility

**In-app purchases:** none


### RF Writer

[App page](https://appshunter.io/ios/app/rf-writer/id1527840861)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GSMKEY free?

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

### Is RF Writer free?

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

### Do GSMKEY or RF Writer have ads?

Neither GSMKEY nor RF Writer shows ads.

### Which is updated more often, GSMKEY or RF Writer?

GSMKEY ships an update every 8 months, and RF Writer monthly. Most recently, GSMKEY was updated on June 10, 2026 and RF Writer on September 20, 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.*