# KKN.Checkin vs ES @Work

The clearest difference is update cadence: ES @Work at every 6 weeks against KKN.Checkin's every 18 months. ES @Work also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

KKN.Checkin ships an update every 18 months, ES @Work every 6 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | KKN.Checkin | ES @Work |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 6 weeks** |
| Size | 20 MB | 51 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Katholische Gesamtkirchengemeinde Nuernberg](https://appshunter.io/developer/1527414963) | [Grandir E&S Bildungs- und Betreuungskonzepte GmbH](https://appshunter.io/developer/1464884399) |

## What reviewers say

### KKN.Checkin

[App page](https://appshunter.io/ios/app/kkncheckin/id1527416996)

**Features:** macOS Compatibility

**In-app purchases:** none


### ES @Work

[App page](https://appshunter.io/ios/app/es-work/id1534151593)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is KKN.Checkin free?

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

### Is ES @Work free?

ES @Work is free to download, with no in-app purchases.

### Do KKN.Checkin or ES @Work have ads?

Neither KKN.Checkin nor ES @Work shows ads.

### Which is updated more often, KKN.Checkin or ES @Work?

KKN.Checkin ships an update every 18 months, and ES @Work every 6 weeks. Most recently, KKN.Checkin was updated on October 25, 2026 and ES @Work on October 25, 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.*