# Key4Friends vs adata Connect

The clearest difference is iOS requirement: adata Connect at 12.0 against Key4Friends's 26.0. 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.

Both ship on a similar rhythm, roughly every 9 months. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Key4Friends | adata Connect |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 9.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | Every 9 months |
| Monetization | Free | — |
| Size | 61 MB | 46 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SimonsVoss Technologies GmbH](https://appshunter.io/developer/1141846652) | [Olaf Wiese](https://appshunter.io/developer/1100148008) |

## What reviewers say

### Key4Friends

[App page](https://appshunter.io/ios/app/key4friends/id1141846653)

Easily and securely share access to doors with friends and family. Receive authorizations from the MobileKey app to open and close designated doors directly from your smartphone. Requires an internet connection for operation.

**Highlights:** Receive digital door keys, Open and close authorized doors, Secure key distribution, Easy friend sharing, Email and SMS verification

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

**In-app purchases:** none


### adata Connect

[App page](https://appshunter.io/ios/app/adata-connect/id1546710795)

**In-app purchases:** none


## Frequently asked questions

### Is Key4Friends free?

Key4Friends is free to download, with no in-app purchases.

### Is adata Connect free?

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

### Do Key4Friends or adata Connect have ads?

Neither Key4Friends nor adata Connect shows ads.

### Which is updated more often, Key4Friends or adata Connect?

Key4Friends ships an update every 9 months, and adata Connect every 9 months. Most recently, Key4Friends was updated on September 24, 2026 and adata Connect on September 19, 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.*