SeaBase
The Sailor's Toolbox
Price history
About
This offline-first sailing companion provides essential tools for life on the water. It includes an anchor alarm, nautical charts, GPS navigation, tide information, and a logbook, all functioning without a cellular signal. Enjoy a comprehensive suite of features with a single, one-time purchase.
What's New in SeaBase
1.1.1
August 12, 2026
New Learn section — brush up on marine terminology, whether you're just starting out or want a quick refresher. Boat parts, navigation lights, and the terms every sailor should know, all in one place. Knot guide refreshed — clearer step-by-step images so you can tie along, knot by knot. Cleaner sail recording screen — a redesigned main view that keeps the numbers that matter front and center while you're underway.
MoreFAQ
Does SeaBase have ads?
No, SeaBase is completely ad-free. The app is a one-time purchase with no subscriptions, in-app purchases, or advertisements.
What devices does SeaBase support?
SeaBase is available for iPhone and Apple Watch. The watch app provides key navigation and anchor alarm controls directly on your wrist.
How often is SeaBase updated?
The latest version of SeaBase is 1.0.1, last updated on July 23, 2026. Updates typically include new features and improvements based on user feedback.
Can I use SeaBase offline?
Yes, SeaBase is designed as an offline-first application. All core features, including charts, navigation, tides, and the anchor alarm, work without a cellular signal.
What is the price of SeaBase?
SeaBase is a paid app with a single, one-time purchase price of $4.99. This purchase grants you lifetime access to all features and chart regions.
What is the age rating for SeaBase?
SeaBase has an age rating of 4+, making it suitable for a wide range of users. The app's straightforward interface and essential tools are designed for ease of use.
How does the anchor alarm in SeaBase work?
The anchor alarm uses phase-based drift detection to monitor your position. It provides scope warnings, drift alerts, and critical alarms with sound and vibration, designed to wake you before your boat does.
Can I export my data from SeaBase?
Yes, SeaBase allows for CSV export of your logbook data. You can also share trip summaries with route previews and a highlight video called Sail Recap.