# Key vs E.ON Event 2.0

The clearest difference is update cadence: Key at every 4 months against E.ON Event 2.0's every 18 months. E.ON Event 2.0's advantage is iOS requirement (14.0 vs 17.0). 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, E.ON Event 2.0 every 18 months. The most recent releases landed on October 2, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Key | E.ON Event 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/eon-event-20/id6499576356/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 18 months |
| Monetization | Free | Free |
| Size | 18 MB | 20 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Interflex Datensysteme GmbH](https://appshunter.io/developer/1150331434) | [E.ON Group](https://appshunter.io/developer/419138166) |

## 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


### E.ON Event 2.0

[App page](https://appshunter.io/ios/app/eon-event-20/id6499576356)

This mobile client provides access to event management features for E.ON's Ventari platform. It allows users to view event details, manage their schedule, see attendee lists, and access their tickets. The app also includes live voting and chat functionalities for enhanced event participation.

**Highlights:** Event overview, My events management, Agenda and schedule, Participant list, Digital ticket access, Live voting, In-app chat

**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 E.ON Event 2.0 free?

E.ON Event 2.0 is free to download, with no in-app purchases.

### Do Key or E.ON Event 2.0 have ads?

Neither Key nor E.ON Event 2.0 shows ads.

### Which is updated more often, Key or E.ON Event 2.0?

Key ships an update every 4 months, and E.ON Event 2.0 every 18 months. Most recently, Key was updated on October 2, 2026 and E.ON Event 2.0 on September 27, 2026.

---

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