# Key vs Mobile Badge

The clearest difference is review sentiment: Key at 100% against Mobile Badge's 50%. Key also leads on device support (3 vs 1). Mobile Badge's advantage is update cadence (every 6 weeks vs every 4 months). On price, ads, in-app purchases and monetization model 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, Mobile Badge every 6 weeks. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Key | Mobile Badge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/mobile-badge/id1453393799/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 7 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Interflex Datensysteme GmbH](https://appshunter.io/developer/1150331434) | [Elatec GmbH](https://appshunter.io/developer/1164930677) |

## 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


### Mobile Badge

[App page](https://appshunter.io/ios/app/mobile-badge/id1453393799)

Transform your smartphone into a contactless access badge for authentication and device login. This app offers a simple, friction-free solution for secure access without physical cards or PINs, with advanced enterprise options available.

**Highlights:** Contactless badge for authentication, Unlock devices and print stations, Bluetooth access with ELATEC readers, Minimal setup required, Optional advanced credential management

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

**In-app purchases:** none


## Frequently asked questions

### Is Key free?

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

### Is Mobile Badge free?

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

### Do Key or Mobile Badge have ads?

Neither Key nor Mobile Badge shows ads.

### Which is updated more often, Key or Mobile Badge?

Key ships an update every 4 months, and Mobile Badge every 6 weeks. Most recently, Key was updated on October 2, 2026 and Mobile Badge on October 1, 2026.

---

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