# ARTMAPP vs K21 App

The clearest difference is review sentiment: K21 App at 100% against ARTMAPP's 46%. ARTMAPP's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.

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

ARTMAPP ships an update every 4 months, K21 App every 6 months. The most recent releases landed on June 11, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | ARTMAPP | K21 App |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 45.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | **Free** | Ad-supported |
| Size | 2 MB | 56 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [ARTMAPP GmbH](https://appshunter.io/developer/1465225658) | [K21 Kirche fuer das 21. Jahrhundert](https://appshunter.io/developer/1539651110) |

## What reviewers say

### ARTMAPP

[App page](https://appshunter.io/ios/app/artmapp/id576794493)

Discover art exhibitions and events in Germany, Austria, and Switzerland. Plan your perfect art weekend with curated recommendations for museums, galleries, and more. Access digital art magazines with exclusive content.

**Highlights:** Exhibition calendar for Germany, Austria, Switzerland, Recommendations for museums and galleries, Listings for art fairs and auction houses, Curated selection of hotels and cafes, Digital art magazines with web links, Print magazine available

**Features:** macOS Compatibility

**In-app purchases:** none


### K21 App

[App page](https://appshunter.io/ios/app/k21-app/id1539651108)

Stay updated with the latest content, sermons, and news. Receive notifications for events and announcements so you don't miss out. Easily make donations and sign up for small groups.

**Highlights:** Latest content and sermons, Event and news notifications, Easy donations, Small group sign-ups, Access to church news

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

**In-app purchases:** none


## Frequently asked questions

### Is ARTMAPP free?

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

### Is K21 App free?

K21 App is free to download, with no in-app purchases.

### Do ARTMAPP or K21 App have ads?

K21 App shows ads; ARTMAPP does not.

### Which is updated more often, ARTMAPP or K21 App?

ARTMAPP ships an update every 4 months, and K21 App every 6 months. Most recently, ARTMAPP was updated on June 11, 2026 and K21 App on August 22, 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.*