# iNmea logger vs Sailing Master M

The clearest difference is in-app purchases: iNmea logger at none against Sailing Master M's 1. iNmea logger also leads on iOS requirement (9.0 vs 17). Sailing Master M's advantage is update cadence (every 2 months vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. Sailing Master M sells 1 in-app purchase, starting at $11.99 per year. iNmea logger asks for nothing beyond the download.

iNmea logger ships an update every 8 months, Sailing Master M every 2 months. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | iNmea logger | Sailing Master M |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sailing-master-m/id1566599912/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 25 MB |
| Requires iOS | **9.0** | 17 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Zifigo](https://appshunter.io/developer/334632036) | [Pekka Leppanen](https://appshunter.io/developer/1566599914) |

## What reviewers say

### iNmea logger

[App page](https://appshunter.io/ios/app/inmea-logger/id417624344)

Record 30-second logs of NMEA sentences received over WiFi. This tool helps debug NMEA instrument input issues for navigation apps. Logs can be emailed for further analysis.

**Highlights:** Record NMEA sentence logs, WiFi input over IP address and port, 30-second log duration, Email logs for analysis, Debugging tool for navigation apps

**Features:** macOS Compatibility, 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 iNmea logger free?

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

### Is Sailing Master M free?

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

### Do iNmea logger or Sailing Master M have ads?

Neither iNmea logger nor Sailing Master M shows ads.

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

iNmea logger ships an update every 8 months, and Sailing Master M every 2 months. Most recently, iNmea logger was updated on October 27, 2026 and Sailing Master M on October 13, 2026.

---

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