# SeasLink vs WilhelmSK

The clearest difference is price: SeasLink at Free against WilhelmSK's $19.99. SeasLink also leads on iOS requirement (8.0 vs 13.0). WilhelmSK's advantage is chart position (#127 vs unranked) and device support (5 vs 2). On update cadence, ads and in-app purchases there is nothing between them.

SeasLink is free to download; WilhelmSK costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 4, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | SeasLink | WilhelmSK |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | — | **[4.5 (28 ratings)](https://appshunter.io/ios/app/wilhelmsk/id1150499484/reviews)** |
| Number of ratings | — | **28** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Paid |
| Best chart rank | — | **#127** |
| Size | 17 MB | 118 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [RoadPia Co., Ltd.](https://appshunter.io/developer/366252913) | [Scott Bender](https://appshunter.io/developer/1150499483) |

## What reviewers say

### SeasLink

[App page](https://appshunter.io/ios/app/seaslink/id918379412)

**Features:** macOS Compatibility

**In-app purchases:** none


### WilhelmSK

[App page](https://appshunter.io/ios/app/wilhelmsk/id1150499484)

**Currently charting:** #127 Top Paid · Navigation (US App Store)

This app provides a customizable dashboard for monitoring and controlling boat systems. It integrates with various marine electronics and offers features like alarm notifications, autopilot control, and chart display.

**Highlights:** Customizable display and monitoring dashboard, Integrates with Signal K Server and various marine devices, Autopilot control and monitoring, Active Captain Points of Interest display, Alarms and push notifications, Navionics chart display, Customizable gauges and layouts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SeasLink free?

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

### Is WilhelmSK free?

WilhelmSK costs $19.99, with no in-app purchases.

### Do SeasLink or WilhelmSK have ads?

Neither SeasLink nor WilhelmSK shows ads.

### Which is updated more often, SeasLink or WilhelmSK?

SeasLink ships an update every 2 months, and WilhelmSK every 2 months. Most recently, SeasLink was updated on October 4, 2026 and WilhelmSK on October 26, 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.*