# Wärtsilä Pilot PRO vs Klamp

The clearest difference is update cadence: Klamp at weekly against Wärtsilä Pilot PRO's every 2 months. Wärtsilä Pilot PRO's advantage is iOS requirement (15.8 vs 17.0). On price, ads, 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.

Wärtsilä Pilot PRO ships an update every 2 months, Klamp weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Wärtsilä Pilot PRO | Klamp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/wartsila-pilot-pro/id825597942/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 73 MB | 30 MB |
| Requires iOS | **15.8** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Wartsila Voyage Sweden AB](https://appshunter.io/developer/398456165) | [Vizion Holding ApS](https://appshunter.io/developer/1715964431) |

## What reviewers say

### Wärtsilä Pilot PRO

[App page](https://appshunter.io/ios/app/wartsila-pilot-pro/id825597942)

This application provides advanced navigational tools for maritime professionals, including deep sea, channel, river, and harbor pilots. It supports various chart formats and integrates with GPS and AIS sensors for precise positioning and data logging.

**Highlights:** AIS Class A and NMEA sensor integration, TX-97, S-63, and S-57 chart support, Docking Mode and Conning Display, Fore & Aft Speed and COG vectors, Extended Data Logging and Playback, Route and Track creation/monitoring, AIS Target presentation and calculations

**Features:** Vision Pro support

**In-app purchases:** none


### Klamp

[App page](https://appshunter.io/ios/app/klamp/id6795071937)

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

**In-app purchases:** none


## Frequently asked questions

### Is Wärtsilä Pilot PRO free?

Wärtsilä Pilot PRO is free to download, with no in-app purchases.

### Is Klamp free?

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

### Do Wärtsilä Pilot PRO or Klamp have ads?

Neither Wärtsilä Pilot PRO nor Klamp shows ads.

### Which is updated more often, Wärtsilä Pilot PRO or Klamp?

Wärtsilä Pilot PRO ships an update every 2 months, and Klamp weekly. Most recently, Wärtsilä Pilot PRO was updated on November 1, 2026 and Klamp on October 31, 2026.

---

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