# GR11 vs Sailing Master M

The clearest difference is price: Sailing Master M at Free against GR11's $14.99. Sailing Master M also leads on update cadence (every 2 months vs every 5 months). GR11's advantage is in-app purchases (none vs 1) and iOS requirement (14.0 vs 17). On ads and device support there is nothing between them.

Sailing Master M is free to download; GR11 costs $14.99 up front. Sailing Master M sells 1 in-app purchase, starting at $11.99 per year. GR11 asks for nothing beyond the download.

GR11 ships an update every 5 months, Sailing Master M every 2 months. The most recent releases landed on August 27, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | GR11 | Sailing Master M |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sailing-master-m/id1566599912/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 26 MB |
| Requires iOS | **14.0** | 17 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Rodriguez-Flores Esparza](https://appshunter.io/developer/1401919628) | [Pekka Leppanen](https://appshunter.io/developer/1566599914) |

## What reviewers say

### GR11

[App page](https://appshunter.io/ios/app/gr11/id1473729080)

**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 GR11 free?

GR11 costs $14.99, with no in-app purchases.

### Is Sailing Master M free?

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

### Do GR11 or Sailing Master M have ads?

Neither GR11 nor Sailing Master M shows ads.

### Which is updated more often, GR11 or Sailing Master M?

GR11 ships an update every 5 months, and Sailing Master M every 2 months. Most recently, GR11 was updated on August 27, 2026 and Sailing Master M on September 9, 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.*