# Hull Speed vs SailNav GPS

The clearest difference is update cadence: SailNav GPS at daily against Hull Speed's every 5 weeks. SailNav GPS also leads on iOS requirement (13.0 vs 16.6). 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.

Hull Speed ships an update every 5 weeks, SailNav GPS daily. The most recent releases landed on October 25, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Hull Speed | SailNav GPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/hull-speed/id6784663005/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Free | — |
| Size | 1 MB | 3 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Zink](https://appshunter.io/developer/1872993886) | [Ilan Hankin](https://appshunter.io/developer/6800408545) |

## What reviewers say

### Hull Speed

[App page](https://appshunter.io/ios/app/hull-speed/id6784663005)

This app provides sailors with a clear and accurate GPS speedometer displaying speed in knots. It features a live trend graph to help optimize sail trim and can show your theoretical hull speed for easy comparison. It is designed for privacy with no ads or tracking.

**Highlights:** Accurate GPS speed in knots, Live speed trend graph, Theoretical hull speed display, Apple Watch app with Keep Awake mode, Completely private, no tracking or ads

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

**In-app purchases:** none


### SailNav GPS

[App page](https://appshunter.io/ios/app/sailnav-gps/id6800408543)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Hull Speed free?

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

### Is SailNav GPS free?

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

### Do Hull Speed or SailNav GPS have ads?

Neither Hull Speed nor SailNav GPS shows ads.

### Which is updated more often, Hull Speed or SailNav GPS?

Hull Speed ships an update every 5 weeks, and SailNav GPS daily. Most recently, Hull Speed was updated on October 25, 2026 and SailNav GPS on October 4, 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.*