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SeaState

SeaState

Marine Weather, Worldwide

3 ratings
2 reviews
🗺️ Navigation
☀️ Weather
Free
In-App Purchases

Details

  • Released
  • Updated

Features

Developer

Tom Curry
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SeaState screenshot #1 for iPhone
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🧾$99.99
In-App Purchase↘︎
⭐2
Reviews↘︎
❓8 answered
FAQ↘︎
📦~ in 2 weeks
Updates frequency↘︎
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About

This marine weather app provides detailed forecasts for oceans worldwide, including swell height, wind, tides, and currents. It features a unique side-by-side comparison of conditions at two locations and an AI-powered briefing for go/no-go decisions.

✓Worldwide marine weather forecasts
✓Side-by-side condition comparison
✓24-hour wave height graphs
✓Redesigned wind page with compass rose
✓AI Captain's Brief for go/no-go advice
✓Passage planning with ETA
✓Safety Hub with emergency contacts and float plans
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What's New in SeaState

1.6.0

August 9, 2026

A big readability overhaul plus four major new features. REDESIGNED FOR ONE-GLANCE ANSWERS • The verdict and the week are now one card — today's GO / CAUTION / NO-GO plus a swipeable 7-day strip showing peak wind and wave height per day • The official NWS marine zone forecast moved to the top, and it's now free for everyone • Weather is one continuous scroll instead of three tabs • Wave forecasts are plain numbers with plain English — no more squinting at charts WIND, HOUR BY HOUR, 7 DAYS OUT Full week of hourly wind. Tap any day for a breakdown, or scan the next 24 hours at a glance. ANCHOR WATCH Set your swing circle and sleep. If the boat drags, SeaState wakes you — phone, lock screen, Dynamic Island and Apple Watch. FIND THE FISH Sea surface temperature and chlorophyll layers reveal temp breaks and colour changes, with a built-in guide to reading the water. CONNECT YOUR BOAT Live depth, wind and speed from your NMEA Wi-Fi gateway, plus AIS traffic drawn on the chart. BAROMETER THAT LOOKS AHEAD 48-hour pressure forecast that calls out sharp drops before the front arrives. ALSO • Official NOAA charts with three detail levels and offline tile caching • Smarter verdict explanations — wind against current, steep chop, gust instability • Trip Log has been retired to keep the app focused

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Subscription plans

SeaState Pro Yearly

Full SeaState Pro access. Billed yearly.

$39.991 Year
7 Days trial
How to cancel SeaState subscription ⁉️
1

In-App Purchases

$99.99

SeaState Pro Lifetime

Unlock SeaState Pro forever.

User reviews

Most RecentHighest RatedLowest Rated

US Data - NOT UK

The tidal data is fixed on Eastport, ME, despite saying Ipswich, England. The high and low tides are totally inaccurate as a result. This puts all other data into doubt too making the App useless.

I’ve altered the location to Ipswich but the tidal data doesn’t change. Useless, unless you’re in Eastport. 😩
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ScotteeeeeeeeeScotteeeeeeeee

Response from developer

Hello, I'm sorry for the data issue. I will resolve it with the next update

Everything you need, all in one place.

This is the BEST all-in-one app for everything you need on the water. It makes it easy to feel confident and prepared every time you head out. It’s my go-to. I check it before every trip, without fail.
Borah7Borah7

FAQ

What is SeaState?

SeaState is a marine weather and navigation app that provides detailed forecasts for oceans worldwide. It offers features like side-by-side condition comparison, AI-powered captain's briefs, and passage planning tools.

Does SeaState have ads?

No, SeaState does not contain advertisements. The app is free to download and use, with optional Pro features available through subscription or a one-time purchase.

What marine conditions does SeaState provide?

SeaState provides swell height, wind speed and direction, tides, currents, and general weather forecasts for any coastline on the planet.

How does SeaState's side-by-side view work?

SeaState's signature side-by-side view allows you to drop two pins anywhere on Earth and compare live conditions. This feature is unique and helps users scout locations or check conditions across different areas simultaneously.

What is the AI Captain's Brief in SeaState?

The AI Captain's Brief uses Apple Intelligence to provide plain-English go/no-go advice tailored to your specific vessel. It interprets forecast tables and reasons through conditions like a seasoned first mate.

What devices does SeaState support?

SeaState is available on Apple Watch, iPhone, and iPad, offering a seamless experience across your Apple devices for marine weather and navigation needs.

How often is SeaState updated?

The latest version of SeaState is 1.2.0, last updated on May 14, 2026. This indicates a commitment to regular updates and improvements for its users.

What are the subscription options for SeaState Pro?

SeaState Pro offers monthly ($4.99) or yearly ($39.99) auto-renewing subscriptions, as well as a one-time lifetime purchase option. Subscriptions can be managed or canceled in your Apple ID account settings.