# KM44 vs Ankerwache Pro

The clearest difference is in-app purchases: KM44 at none against Ankerwache Pro's 2. Ankerwache Pro's advantage is update cadence (every 6 days vs every 3 months) and device support (3 vs 1). On price, review sentiment and ads there is nothing between them.

Both are free to download. Ankerwache Pro sells 2 in-app purchases, starting at $8.99 per year. KM44 asks for nothing beyond the download.

KM44 ships an update every 3 months, Ankerwache Pro every 6 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | KM44 | Ankerwache Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 29 MB |
| Requires iOS | 26.6 | **17.6** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Jan Fiegert](https://appshunter.io/developer/1512019825) | [Frank Urbanowitz](https://appshunter.io/developer/1778548662) |

## What reviewers say

### 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


### Ankerwache Pro

[App page](https://appshunter.io/ios/app/ankerwache-pro/id6737927360)

This app provides a reliable anchor alarm and management system for recreational boaters. It monitors your position to alert you of drift, allowing for safe nights at anchor. You can also save, share, and discover anchorages with other users.

**Highlights:** Reliable anchor alarm with drift detection, Save and manage anchorages with details, Rate, share, and discover anchorages, Mirror mode for multi-device monitoring, Apple Watch app for wrist alerts, Live status on Lock Screen and Dynamic Island

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly | $8.99 | per year |
| Buy | $17.99 | one-time |


## Frequently asked questions

### Is KM44 free?

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

### Is Ankerwache Pro free?

Ankerwache Pro is free to download, with in-app purchases available.

### Do KM44 or Ankerwache Pro have ads?

Neither KM44 nor Ankerwache Pro shows ads.

### Which is updated more often, KM44 or Ankerwache Pro?

KM44 ships an update every 3 months, and Ankerwache Pro every 6 days. Most recently, KM44 was updated on October 24, 2026 and Ankerwache Pro on October 16, 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.*