# UMC Client vs Sempro app

The clearest difference is update cadence: Sempro app at every 3 weeks against UMC Client's every 3 months. Sempro app also leads on iOS requirement (13.4 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.

UMC Client ships an update every 3 months, Sempro app every 3 weeks. Both last shipped on September 15, 2026.

## The numbers

| Metric | UMC Client | Sempro app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/umc-client/id1459017134/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 117 MB | 41 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MILLENIUM GROUP, INC.](https://appshunter.io/developer/1459017133) | [Mobile Tech. Inc.](https://appshunter.io/developer/872145895) |

## What reviewers say

### UMC Client

[App page](https://appshunter.io/ios/app/umc-client/id1459017134)

This app allows users to securely and quickly open doors connected to Millennium Ultra Access Control systems using their smartphone. It serves as a convenient digital replacement for physical access cards and keys.

**Highlights:** Open doors remotely, Secure access, Digital access card replacement, Fast and simple to use

**Features:** macOS Compatibility

**In-app purchases:** none


### Sempro app

[App page](https://appshunter.io/ios/app/sempro-app/id6740983086)

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

**In-app purchases:** none


## Frequently asked questions

### Is UMC Client free?

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

### Is Sempro app free?

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

### Do UMC Client or Sempro app have ads?

Neither UMC Client nor Sempro app shows ads.

### Which is updated more often, UMC Client or Sempro app?

UMC Client ships an update every 3 months, and Sempro app every 3 weeks. Most recently, UMC Client was updated on September 15, 2026 and Sempro app on September 15, 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.*