SeaSick - Will I Puke?

Comfort Calculator for Sailors

$3.99 · Designed for iPad. Not verified for macOS.

Comfort calculator and weather logbook for sailors. SeaSick uses real physics and wave forecasts to predict comfort — from Champagne Sailing to Vomit Comet. Will it be Champagne Sailing or are you boarding the Vomit Comet? SeaSick tells you — before you leave the dock. SeaSick is the only app that combines real physics and scientific seasickness research with real-time weather data. Version 3.0 goes beyond prediction: measure actual boat motion, keep a complete weather logbook, and read proven prevention tips — all in one app. ---------------- COMFORT PREDICTION Enter wave height, period, and boat details — or tap the map and let SeaSick fetch live data. You'll get a Comfort Score from 0 to 10, based on research by O'Hanlon & McCauley and ISO standards for human comfort. • Manual input or real-time data via the forecast map • Monohull, catamaran, or motorboat • Boat speed, heading, and wave direction factored in • Adjust time: -1 hour, +1 day, or 'now' • Works for any sea, worldwide The verdict? Honest and with humor — from "Champagne Sailing" to "Vomit Comet". ---------------- MOTION MEASUREMENT — new in 3.0 Lay your phone flat on the deck or in the cockpit. SeaSick measures actual boat motion for 30 seconds via the accelerometer and gives you: • Sea state: from glass-calm to storm • Real-time G-forces with color scale • "How do you feel?" — results based on your condition and measured motion ---------------- WEATHER LOGBOOK — new in 3.0 Keep a logbook of your trip(s): • GPS location (with place name and country) • Wave height, wave period, wind speed & direction • Sea temperature, air temperature, cloud cover, WMO weather codes • Enter manually or fetch automatically (and adjust) • Export as XLSX spreadsheet via AirDrop, email, or cloud ---------------- PREVENTION & RELIEF — new in 3.0 Two sections: prevent seasickness and what to do if you're already feeling sick. • Explained: why do you get seasick? • Behavioral tips, dietary advice, and risk factors • Natural remedies: ginger, peppermint, acupressure bands • Tools and medication overview with dosages • Adjustable font size for reading at sea ---------------- 13 LANGUAGES Fully translated: EN, NL, DE, FR, ES, IT, PT, PL, SV, NO, DA, EL, AR ---------------- FAIR PRICING Pay once, lifetime updates. No subscriptions, no ads, no in-app purchases. • Dark mode • Metric and imperial • No account needed ---------------- Download SeaSick and know what you're in for.

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SeaSick 3.0 — major update with new features! WEATHER LOGBOOK Keep a logbook of all your trips: GPS location, wave height, wind, temperature, and more. Export as XLSX spreadsheet. MOTION MEASUREMENT Measure actual boat motion with your phone's sensor. Lay it flat, measure for 30 seconds, and get instant sea state results with advice. PREVENTION & RELIEF Two sections with tips, dietary advice, natural remedies, and medication overview. 13 LANGUAGES Fully translated: EN, NL, DE, FR, ES, IT, PT, PL, SV, NO, DA, EL, AR. OTHER • New design • Dark mode • Metric and imperial • Improved comfort calculation

Version 3

The developer, Elle Rowbottom, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

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

    • Identifiers
    • Usage Data

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
Elle Rowbottom
Size
47.2 MB
Category
Weather
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 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.
Languages
English and 12 more
  • English, Arabic, Danish, Dutch, French, German, Greek, Italian, Norwegian Bokmål, Polish, Portuguese, Spanish, Swedish
Age Rating
9+
Copyright
© 2026 Elle • Cold Coffee
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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