# Sail Expert: Sailing App

> Sailing, Navigation, Instruments, Logbook, Weather, Wind Profile, GPS & NMEA

Canonical page: [https://chrome-stats.com/d/com.poterion.logbook](https://chrome-stats.com/d/com.poterion.logbook)

## Overview

- **ID:** `com.poterion.logbook`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Poterion
- **Category:** SPORTS
- **Downloads:** 88,352
- **Rating:** 4.24 / 5 (331 ratings)
- **Version:** 7.1.326
- **Last updated:** 2026-02-13
- **First published:** 2014-09-15
- **Publisher country:** DE
- **Size:** 144 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.poterion.logbook)
- **Website:** [http://sail.expert](http://sail.expert/)
- **Privacy policy:** [https://sail.expert/privacy](https://sail.expert/privacy)

## Description

Sail Expert is a versatile sailing app that combines navigation, weather forecasting, and logbook management into one tool. It supports real-time data from device sensors or onboard instruments to automatically record your sailing data for both casual days on the water and regatta prep.

Key features include real-time navigation tools, offline maps and chart support, comprehensive weather overlays, trip planning with export options, NMEA instrument compatibility, Wear OS companion, and customizable alarms for maintenance and safety.

## Rankings

- #233,958 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.AUTHENTICATE_ACCOUNTS`
- `android.permission.BLUETOOTH`
- `android.permission.CAMERA`
- `android.permission.CHANGE_NETWORK_STATE`
- `android.permission.CHANGE_WIFI_MULTICAST_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_LOCATION`
- `android.permission.FOREGROUND_SERVICE_SPECIAL_USE`
- `android.permission.GET_ACCOUNTS`
- `android.permission.INTERNET`
- `android.permission.NEARBY_WIFI_DEVICES`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_CONTACTS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`
- `com.poterion.logbook.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Sail Expert is a promising sailing app favored for its NMEA data support, automatic logging, and clean design. However, users face issues with unclear subscription policies, map/chart management problems, syncing deficiencies, constant location permission requests, and occasional app freezes during use. Despite these cons, the developers are responsive, and many users find it highly useful for serious seamanship.

### Pros

- Provides real-time sailing information and supports NMEA data integration for detailed monitoring.
- Offers automatic logging features, including anchor alarms and maintenance logs, appreciated by experienced sailors.
- Well-designed and functional user interface that is easy to use and configure.
- Free version is ad-free, and developers are responsive and active in improving the app.
- Supports chart downloads and can function as a chartplotter with external AIS/GPS devices.

### Cons

- Requires subscription for full functionality, which is not clearly communicated upfront, causing confusion and unexpected charges.
- Issues with map/chart downloads and display, including charts sometimes not showing until reinstalling the app.
- Syncing problems between devices, such as incomplete data synchronization.
- App requires location permissions all the time, raising privacy concerns, especially when app is closed.
- The app can become unstable or freeze during voyages, leading to loss of log entries and usability issues.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.poterion.logbook)