# NMU Registration System vs DORM SDU

The clearest difference is update cadence: NMU Registration System at every 2 months against DORM SDU's every 6 months. NMU Registration System also leads on iOS requirement (11.0 vs 13.0). 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.

NMU Registration System ships an update every 2 months, DORM SDU every 6 months. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | NMU Registration System | DORM SDU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Size | 41 MB | 19 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [VISION NET CO., LTD.](https://appshunter.io/developer/1102293614) | [GT TECHNOLOGIES COMPANY LIMITED](https://appshunter.io/developer/1592961916) |

## What reviewers say

### NMU Registration System

[App page](https://appshunter.io/ios/app/nmu-registration-system/id6444463675)

**Features:** macOS Compatibility

**In-app purchases:** none


### DORM SDU

[App page](https://appshunter.io/ios/app/dorm-sdu/id6444823369)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NMU Registration System free?

NMU Registration System is free to download, with no in-app purchases.

### Is DORM SDU free?

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

### Do NMU Registration System or DORM SDU have ads?

Neither NMU Registration System nor DORM SDU shows ads.

### Which is updated more often, NMU Registration System or DORM SDU?

NMU Registration System ships an update every 2 months, and DORM SDU every 6 months. Most recently, NMU Registration System was updated on October 13, 2026 and DORM SDU on September 29, 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.*