# RDM写码器 vs DeviceTestApp

The clearest difference is update cadence: DeviceTestApp at every 11 days against RDM写码器's every 6 weeks. RDM写码器'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.

RDM写码器 ships an update every 6 weeks, DeviceTestApp every 11 days. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | RDM写码器 | DeviceTestApp |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Free | — |
| Size | 23 MB | 2 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [少昌 黄](https://appshunter.io/developer/1482588766) | [GALAXY TELECOM](https://appshunter.io/developer/905658140) |

## What reviewers say

### RDM写码器

[App page](https://appshunter.io/ios/app/rdm/id1487361715)

This utility app simplifies the process of writing DMX512 addresses for lighting fixtures that support the RDM protocol. It offers automatic addressing, address list saving, and sorting functionalities. Users can identify, write, modify channels, and view device information.

**Highlights:** RDM protocol DMX512 address writing, Automatic address writing, Save address lists, Sorting functionality, Identify and modify channels, View device information

**Features:** macOS Compatibility

**In-app purchases:** none


### DeviceTestApp

[App page](https://appshunter.io/ios/app/devicetestapp/id6758030896)

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

**In-app purchases:** none


## Frequently asked questions

### Is RDM写码器 free?

RDM写码器 is free to download, with no in-app purchases.

### Is DeviceTestApp free?

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

### Do RDM写码器 or DeviceTestApp have ads?

Neither RDM写码器 nor DeviceTestApp shows ads.

### Which is updated more often, RDM写码器 or DeviceTestApp?

RDM写码器 ships an update every 6 weeks, and DeviceTestApp every 11 days. Most recently, RDM写码器 was updated on October 1, 2026 and DeviceTestApp on October 5, 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.*