# Clex Key vs CPR cloud

The clearest difference is iOS requirement: CPR cloud at 13.0 against Clex Key's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Clex Key ships an update every 2 months, CPR cloud monthly. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Clex Key | CPR cloud |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 18 MB | 69 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Uhlmann & Zacher GmbH](https://appshunter.io/developer/1413776543) | [I.M.LAB inc](https://appshunter.io/developer/1072264906) |

## What reviewers say

### Clex Key

[App page](https://appshunter.io/ios/app/clex-key/id1500405117)

This app allows you to open and close electronic locking units using your smartphone via Bluetooth Low Energy. It ensures high security through a two-part invitation confirmation process. The updated version offers more efficient communication, stable performance, and an improved user interface.

**Highlights:** Unlock doors via Bluetooth, Receive mobile keys, Efficient communication with locking units, Improved user guidance, High security standards, Execute block requests

**Features:** macOS Compatibility

**In-app purchases:** none


### CPR cloud

[App page](https://appshunter.io/ios/app/cpr-cloud/id6757599852)

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

**In-app purchases:** none


## Frequently asked questions

### Is Clex Key free?

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

### Is CPR cloud free?

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

### Do Clex Key or CPR cloud have ads?

Neither Clex Key nor CPR cloud shows ads.

### Which is updated more often, Clex Key or CPR cloud?

Clex Key ships an update every 2 months, and CPR cloud monthly. Most recently, Clex Key was updated on October 8, 2026 and CPR cloud on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*