NaviLog

Navigation

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

NaviLog — The Digital Logbook for Skippers NaviLog turns your phone into a complete sailing logbook: automatic GPS track recording, a physics-based anchor alarm, one-tap man-overboard marking and a barometric storm warning — all working 100% offline and without an account. Your logbook belongs to you: it is stored locally on your device, not in someone else's cloud. AUTOMATIC GPS TRIP LOGGING • Start a trip and NaviLog records your route in the background — screen off, no internet needed • Distance in nautical miles or kilometers, duration, average and maximum speed • Smart GPS filtering removes outliers for clean, accurate tracks • Notes, weather and crew for every leg of your voyage • Engine hours counter per trip and per yacht ANCHOR ALARM (ANCHOR WATCH) • Physics-based swing circle calculated from chain length, water depth, bow height and boat length — not just a plain radius • Supports tide, mooring type and even a second anchor • Pre-alarm, GPS-loss alarm and low-battery warning • Adjust anchor position and chain length while the watch stays armed • Wind and swing history recorded for every anchorage MAN OVERBOARD (MOB) • One tap marks the position instantly and guides you back with live bearing and distance • Works with or without an active trip recording WEATHER & STORM ALARM • Marine weather and wind forecast for your current position (online) • Pressure-drop storm warning from your phone's built-in barometer — works completely offline, far from any coverage SEA CHARTS & OFFLINE MAPS • OpenSeaMap seamark overlay: buoys, lights, fairways on the map • Download chart regions before you cast off and review your tracks offline (Pro) FOR SKIPPER & CREW • Crew, skipper and yacht profiles, official crew lists • Checklists with templates (departure, safety briefing, engine check …) • Sea-miles certificates for licence training and charter proof EXPORT & BACKUP (PRO) • Complete logbook and sea-miles certificate as PDF • Tracks as GPX for OpenCPN, chart plotters and other apps • CSV import/export of trips, crew, yachts and anchor history MADE FOR NIGHT WATCHES • Night-watch mode in red-on-black to protect your night vision • Dark mode, fully localized in English and German PRIVACY FIRST • No account, no ads, no tracking of your behaviour • Your logbook data is stored only on your device • Optional online features (weather, place names, map tiles) contact their services only when you use them WHO IS NAVILOG FOR? Sailors, skippers, charter crews, motorboaters and liveaboards — for coastal cruising, blue-water passages, regattas, sailing school and logging licence miles. If you have ever asked for the best free sailing logbook app with an anchor alarm that works offline, this is it. NaviLog is free as a full logbook with GPS tracking, anchor alarm and MOB. A single one-time purchase unlocks Pro (PDF/GPX/CSV export, crew lists, templates, offline chart download) — no subscription, ever. Note: NaviLog is a logbook and an aid to good seamanship — it does not replace official navigation equipment or safe anchoring practice.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

FIXED: The VHF/SRC radio screen no longer crashes when you leave it while it is still finding your position. IMPROVED: Stability on iPhones without a barometer.

Version 2.5.1

The developer, Felix Bartschi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Contact Info
    • Identifiers
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Felix Bartschi
Size
41.9 MB
Category
Navigation
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Location
This app may use your location even when it isn’t open, which can decrease device battery life.
Languages
English and German
Age Rating
4+
In-App Purchases
Yes
Copyright
© Felix Bärtschi
  • Developer Website
  • Privacy Policy

    • More by Felix Bartschi

    You Might Also Like