# Boat Instruments vs Sailing Master M

The clearest difference is price: Sailing Master M at Free against Boat Instruments's $6.99. Boat Instruments's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 17). On update cadence, ads and device support there is nothing between them.

Sailing Master M is free to download; Boat Instruments costs $6.99 up front. Sailing Master M sells 1 in-app purchase, starting at $11.99 per year. Boat Instruments asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 13, 2026.

## The numbers

| Metric | Boat Instruments | Sailing Master M |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sailing-master-m/id1566599912/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 19 MB | 25 MB |
| Requires iOS | **8.0** | 17 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [FB Imray Laurie Norie & Wilson GmbH](https://appshunter.io/developer/1871410394) | [Pekka Leppanen](https://appshunter.io/developer/1566599914) |

## What reviewers say

### Boat Instruments

[App page](https://appshunter.io/ios/app/boat-instruments/id594170910)

This app provides AIS, GPS, and instrument data for boats, acting as a companion to onboard systems or a standalone GPS tool. It displays real-time data like depth, speed, and wind, and shows the position and course of nearby vessels with collision warnings.

**Highlights:** AIS and GPS data display, Real-time instrument readings, Collision detection warnings, Configurable instrument pages, NMEA bridge connectivity via WiFi, Target position and course tracking

**Features:** Vision Pro support

**In-app purchases:** none


### Sailing Master M

[App page](https://appshunter.io/ios/app/sailing-master-m/id1566599912)

This app provides comprehensive sailing data and performance optimization on various Apple devices. It displays over 35 sailing measurements from boat instruments, polars tables, and nautical charts, offering detailed wind, route, and map views. Connectivity is established through NMEA 0183 Wi-Fi gateways.

**Highlights:** Configurable data displays, 35+ sailing measurements, Wind, route, and map displays, NMEA 0183 Wi-Fi connectivity, Polars table integration, Nautical chart overlays

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro annual | $11.99 | per year |


## Frequently asked questions

### Is Boat Instruments free?

Boat Instruments costs $6.99, with no in-app purchases.

### Is Sailing Master M free?

Sailing Master M is free to download, with in-app purchases available.

### Do Boat Instruments or Sailing Master M have ads?

Neither Boat Instruments nor Sailing Master M shows ads.

### Which is updated more often, Boat Instruments or Sailing Master M?

Boat Instruments ships an update every 2 months, and Sailing Master M every 2 months. Most recently, Boat Instruments was updated on October 13, 2026 and Sailing Master M on October 13, 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.*