# Proxess Mobile Keys vs Plus4U Key

The clearest difference is update cadence: Proxess Mobile Keys at every 2 months against Plus4U Key's every 6 months. Plus4U Key's advantage is iOS requirement (13.0 vs 16.6). 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.

Proxess Mobile Keys ships an update every 2 months, Plus4U Key every 6 months. The most recent releases landed on September 3, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Proxess Mobile Keys | Plus4U Key |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (20 ratings)](https://appshunter.io/ios/app/proxess-mobile-keys/id1545662032/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free | — |
| Size | 26 MB | 87 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Proxess](https://appshunter.io/developer/1545662034) | [Plus4U Net a.s.](https://appshunter.io/developer/899103157) |

## What reviewers say

### Proxess Mobile Keys

[App page](https://appshunter.io/ios/app/proxess-mobile-keys/id1545662032)

Access secure entry points using your smartphone. This application allows for seamless authentication with Proxess security system locksets and readers.

**Highlights:** Mobile entry through Proxess security systems, Use smartphone as access key, Integrates with locksets and readers, Secure authentication

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

**In-app purchases:** none


### Plus4U Key

[App page](https://appshunter.io/ios/app/plus4u-key/id6443866595)

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

**In-app purchases:** none


## Frequently asked questions

### Is Proxess Mobile Keys free?

Proxess Mobile Keys is free to download, with no in-app purchases.

### Is Plus4U Key free?

Plus4U Key is free to download, with no in-app purchases.

### Do Proxess Mobile Keys or Plus4U Key have ads?

Neither Proxess Mobile Keys nor Plus4U Key shows ads.

### Which is updated more often, Proxess Mobile Keys or Plus4U Key?

Proxess Mobile Keys ships an update every 2 months, and Plus4U Key every 6 months. Most recently, Proxess Mobile Keys was updated on September 3, 2026 and Plus4U Key on September 9, 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.*