# DoRIS mobile vs KM44

The clearest difference is device support: DoRIS mobile at 3 against KM44's 1. DoRIS mobile also leads on iOS requirement (15.6 vs 26.6). 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.

DoRIS mobile ships an update every 6 months, KM44 every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DoRIS mobile | KM44 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 46 MB | 10 MB |
| Requires iOS | **15.6** | 26.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [via donau - Oesterreichische Wasserstrassen-Gesellschaft mbH](https://appshunter.io/developer/852257768) | [Jan Fiegert](https://appshunter.io/developer/1512019825) |

## What reviewers say

### DoRIS mobile

[App page](https://appshunter.io/ios/app/doris-mobile/id852257765)

**Features:** macOS Compatibility

**In-app purchases:** none


### KM44

[App page](https://appshunter.io/ios/app/km44/id1512019826)

This app helps determine your position on federal waterways using GPS. It's useful when waterway markers are obscured, out of sight, or missing, allowing you to identify your location on the river.

**Highlights:** GPS-based position determination, Identifies waterway kilometer markers, Useful when markers are obscured, Works on federal waterways, Assists in navigation

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DoRIS mobile free?

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

### Is KM44 free?

KM44 is free to download, with no in-app purchases.

### Do DoRIS mobile or KM44 have ads?

Neither DoRIS mobile nor KM44 shows ads.

### Which is updated more often, DoRIS mobile or KM44?

DoRIS mobile ships an update every 6 months, and KM44 every 3 months. Most recently, DoRIS mobile was updated on October 29, 2026 and KM44 on October 24, 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.*