# GSM Alarm vs DCast

The clearest difference is update cadence: GSM Alarm at monthly against DCast's every 4 months. GSM Alarm also leads on iOS requirement (9.0 vs 14.2). 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 Alarm ships an update monthly, DCast every 4 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | GSM Alarm | DCast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 1 MB | 57 MB |
| Requires iOS | **9.0** | 14.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [亚钢 蔡](https://appshunter.io/developer/959255230) | [Zhejiang Dahua Vision Technology Co.,Ltd.](https://appshunter.io/developer/1490059642) |

## What reviewers say

### GSM Alarm

[App page](https://appshunter.io/ios/app/gsm-alarm/id959292939)

**Features:** macOS Compatibility

**In-app purchases:** none


### DCast

[App page](https://appshunter.io/ios/app/dcast/id6745861023)

**In-app purchases:** none


## Frequently asked questions

### Is GSM Alarm free?

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

### Is DCast free?

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

### Do GSM Alarm or DCast have ads?

Neither GSM Alarm nor DCast shows ads.

### Which is updated more often, GSM Alarm or DCast?

GSM Alarm ships an update monthly, and DCast every 4 months. Most recently, GSM Alarm was updated on November 1, 2026 and DCast on October 30, 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.*