Sailing Log: Boat Logbook

Tracks, anchor alarm & charts

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

Sailing Log is the logbook your boat deserves: it records every sail automatically, keeps watch while you sleep at anchor, and turns your trips into something worth sharing. No accounts, no subscriptions, no servers — your data lives on your devices and nowhere else. RECORD EVERY SAIL Tap once and go. GPS keeps logging with the phone locked and pocketed, tracking distance, speed over ground, heading, and duration. A Lock Screen view shows your numbers without unlocking. ANCHOR ALARM THAT ACTUALLY WAKES YOU Drop the hook, set your rode and margin, and sleep. If the boat drags, a looping siren, repeating notifications, and a full-screen alert make sure you know — with live drift distance on the Lock Screen all night. NAUTICAL CHARTS OpenSeaMap seamarks and modeled depths over Apple Maps, with offline tile caching for the waters you sail. Tap any charted light or buoy to see its details. Over 23,000 marinas worldwide. PLAN, THEN SAIL Draw a route on the chart, see distance and ETA instantly, set the date and crew, then start it — with live course-to-steer guidance keeping you on track. SHARE CARDS WORTH POSTING Turn a trip into a Strava-style card from your photos or videos, route and stats overlaid, in square, postcard, or story format for Instagram and TikTok. THE WHOLE BOAT Boats with full details, crew rosters, maintenance with engine hours, GPX import and export, and onboard storage mapped on your boat's own interior layout so everyone finds the spare impeller. PRIVATE BY DESIGN No analytics, no tracking, no advertising. Everything syncs privately between your own devices via iCloud, and exports as standard GPX whenever you like. Your logs are yours. The first 10 trips are free. Unlimited trips is a single one-time purchase — no subscription, ever. IMPORTANT — Sailing Log is for reference and general guidance only. Charts, depths, and marina data come from OpenSeaMap, EMODnet, and OpenStreetMap; they are incomplete and may be inaccurate, and must not be used for navigation or routing. The anchor alarm is a backup aid that can fail (GPS, battery, or iOS issues) and is no substitute for a proper watch. Always navigate with official charts, keep a lookout, and use your own judgment. You are solely responsible for the safety of your vessel and crew; the developer accepts no liability.

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Weather forecast: a new Weather tab shows a 3-day wind, gust, wave, temperature, and rain map right on the chart, with a time slider and a tap for the exact forecast anywhere. Weather is also available while you plan a passage. Record and keep sailing: minimize the recording screen to a small live pill and use the rest of the app while you sail. Marinas and seamarks now show on the recording chart too. Multi-photo share cards: build a collage from several photos, with a fill or fit crop for each one. Backup and restore: export your whole logbook to a file and restore it whenever you need. Photos and videos now sit at the top of each trip, with a quick jump button.

Version 1.1

The developer, Joosep Koljalg, 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 Collected

    The developer does not collect any data from this app.

    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
    • Joosep Koljalg
    Size
    • 10.5 MB
    Category
    • Navigation
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    Location
    • This app may use your location even when it isn’t open, which can decrease device battery life.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Joosep Kõljalg
  • Developer Website
  • Privacy Policy

    • More by Joosep Koljalg

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