# Key vs ACL App

The clearest difference is iOS requirement: ACL App at 15.6 against Key's 17.0. On price, review sentiment, update cadence and ads there is nothing between them.

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

Key ships an update every 4 months, ACL App every 3 months. The most recent releases landed on September 14, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Key | ACL App |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 18 MB | 46 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Interflex Datensysteme GmbH](https://appshunter.io/developer/1150331434) | [Automobile Club du Luxembourg](https://appshunter.io/developer/1546856492) |

## What reviewers say

### Key

[App page](https://appshunter.io/ios/app/key/id1150331435)

Transform your iPhone into a mobile ID card for convenient door access. Securely register your credentials and use your phone to open doors, leveraging advanced encrypted transfer technology.

**Highlights:** Smartphone as mobile ID, Convenient door opening, Secure credential transfer, iPhone integration, Requires Interflex software

**In-app purchases:** none


### ACL App

[App page](https://appshunter.io/ios/app/acl-app/id1195544113)

This app provides quick and efficient assistance worldwide. It offers features like emergency calls with vehicle data, real-time traffic information, club news, and a digital membership card. Available in multiple languages, it offers enhanced benefits for club members.

**Highlights:** eCall mobile with vehicle data, Real-time traffic information, Club news and updates, Digital membership card, eCharging station locator

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

**In-app purchases:** none


## Frequently asked questions

### Is Key free?

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

### Is ACL App free?

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

### Do Key or ACL App have ads?

Neither Key nor ACL App shows ads.

### Which is updated more often, Key or ACL App?

Key ships an update every 4 months, and ACL App every 3 months. Most recently, Key was updated on September 14, 2026 and ACL App on September 27, 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.*