Go or No? Marine Boat Weather
Benjamin Smith-d'Agincourt Weather iPhoneiPadiPod touch
Go or No? Marine Boat Weather is a free Weather app for iPhone and iPad by Benjamin Smith-d'Agincourt. Requires iOS 17.0. Updated September 12, 2026.
- Price
- Free
- on the App Store
- Size
- 7 MB
- Age 4+
- Updated
- Sep 12
- 2026 · v2.4.0
Screenshots
About Go or No? Marine Boat Weather
Go or No turns the marine forecast into a decision. Instead of making you stitch together wind, waves, and tide tables, it gives you one clear answer: is it a good day to head out — on YOUR boat, today, from your spot? ONE CLEAR ANSWER • A 1–10 boat-safety score with a plain GO / CAUTION / NO-GO verdict • The score adapts to YOUR vessel — powerboat, sailboat, kayak, or other • Set your length, engines, and horsepower and the score tightens or eases to match • A kayak needs far calmer water than a big powerboat, and the verdict knows the difference • A "now vs. later" read, e.g. "Light chop now — choppy by mid-afternoon" • No black box — tap any verdict to see the why: the reasons, the numbers, and the charts behind it MARINE CONDITIONS • Wind speed, gusts, and direction • Wave and swell height and period • Water (sea-surface) temperature • Fog and visibility • Cloud cover WEATHER • Current conditions, hourly, and a 7-day forecast • Barometric pressure with a rising or falling trend • UV index, humidity, and sunrise / sunset times TIDES • High and low tide times and heights from NOAA (US coastal) • A tide curve for the days ahead ANY HARBOR, ANY SPOT • Search any harbor, town, or beach by name and save it • Or drop in exact coordinates, or just use your current GPS location • Keep the places you fish and boat one tap apart and switch between them BUILT FOR THE HELM • Dark, glare-friendly design that won't blind you at dawn or burn your eyes at night • Big type and glanceable cards, made for a one-handed check underway • Your units, boat, and saved spots stick — set them once Weather works anywhere in the world. NOAA tides cover US coastal waters. Free. No account. No ads. No tracking. No sign-up wall. This app is an advisory planning aid — always check the official NWS marine forecast and use your own judgment on the water. Data from Open-Meteo and NOAA.
What’s new
Version 2.4.0 · Updated September 12, 2026
Under-the-hood improvements to help us learn which features matter most and keep making Go or No better, plus minor performance and reliability fixes.
App privacy
The developer, Benjamin Smith-d'Agincourt, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Product Interaction
- Location: Precise Location
Used for: Analytics, App Functionality
Alternatives to Go or No? Marine Boat Weather
Looking for apps like Go or No? Marine Boat Weather? Here are 6 similar apps on the App Store. The highest rated is Your Weather Window (5.0/5), and all 6 are free to download.
-
Your Weather Window
5.0
-
Local Boats
5.0
-
GoWindow — Boating Weather
4.8
-
Weather Girls 2.0
-
CapyCast: Pixel Weather
-
umbrella · will it rain
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Go or No? Marine Boat Weather | – | Free | September 12, 2026 | |
| Your Weather Window | 5.0 / 5 (1) | Free | Jun 3, 2026 | Compare |
| Local Boats | 5.0 / 5 (1) | Free | Apr 30, 2026 | Compare |
| GoWindow — Boating Weather | 4.8 / 5 (4) | Free | Jul 22, 2026 | Compare |
| Weather Girls 2.0 | – | Free | Jun 7, 2026 | Compare |
| CapyCast: Pixel Weather | – | Free | Aug 22, 2026 | Compare |
| umbrella · will it rain | 5.0 / 5 (1) | Free | Sep 1, 2026 | Compare |