# UEM vs DIAAMS

The clearest difference is update cadence: DIAAMS at weekly against UEM's every 3 weeks. DIAAMS also leads on iOS requirement (11.0 vs 16.0). 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.

UEM ships an update every 3 weeks, DIAAMS weekly. The most recent releases landed on September 17, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | UEM | DIAAMS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 3 MB | 41 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thinking Software Technology Co., Ltd.](https://appshunter.io/developer/1191428463) | [Delta Electronics, Inc.](https://appshunter.io/developer/386896582) |

## What reviewers say

### UEM

[App page](https://appshunter.io/ios/app/uem/id1487428839)

**Features:** macOS Compatibility

**In-app purchases:** none


### DIAAMS

[App page](https://appshunter.io/ios/app/diaams/id1498872363)

This mobile interface is designed for the Delta DIAAMS system. It enables immediate reception of alert notifications through push messages when new alarm events occur within the DIAAMS system. The application requires the Delta DIAAMS web-based main system to function.

**Highlights:** Real-time alert notifications, Push notification support, Designed for Delta DIAAMS system, Requires web-based main system, Mobile browsing interface

**In-app purchases:** none


## Frequently asked questions

### Is UEM free?

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

### Is DIAAMS free?

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

### Do UEM or DIAAMS have ads?

Neither UEM nor DIAAMS shows ads.

### Which is updated more often, UEM or DIAAMS?

UEM ships an update every 3 weeks, and DIAAMS weekly. Most recently, UEM was updated on September 17, 2026 and DIAAMS on June 4, 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.*