GO / NO-GO reads the boating weather forecast for your exact boat, crew and plan — then gives you one clear verdict before you leave the dock. No more squinting at a wall of numbers.
Privacy-first — your boat profile never leaves your phone.
13 knots is a lazy afternoon in a cabin cruiser and a rough ride in a PWC. A 0.4 m swell at a 4-second period is steeper and nastier than the height alone suggests.
GO / NO-GO does the weighing for you. It measures every factor against the limits of your boat, crew and plan — and the worst factor always sets the verdict. The decision to go is still yours.
Set it up once. Get a straight answer every time you think about going out.
Pick your hull — RIB, bowrider, cabin cruiser, PWC, power cat, sailboat or sailing cat — and set your comfort limits. Stored on your device, never uploaded.
Open the app and see GO, THINK TWICE or NO-GO for right now — plus a colour bar for every hour of your day on the water.
Tap any hour for the reason in plain English — not just raw stats. Know exactly why it's amber before you commit.
Every hour's forecast is judged against limits set by your boat, crew and plan. The worst factor decides — no guesswork.
A colour bar from dawn to dusk shows your GO, THINK TWICE and NO-GO hours at a glance. Tap any hour for the full breakdown.
Planning a trip? See morning and afternoon verdicts for the next 10 days and the single best window for your setup.
Plain-English explanations translate wind, gusts, wave height and period into what they'll actually feel like on the helm.
From a nimble PWC to a heavy sailing cat, thresholds are tuned to how your class of boat actually handles the sea.
Keep your shore contact, emergency numbers and marina slip in one place — ready to hand over if it's ever needed.
No tracking, no data sold. Your boat profile lives on your device. Your free account holds only your name, email and sign-in, to run Premium and referrals. Your coordinates go to the forecast provider to fetch the forecast, and are never stored.
Knots and feet or km/h and metres — switch to whatever you think in. Sunrise, sunset and your distance from the marina, built in.
Verdicts are local to where you actually launch, with your home marina and distance-from-shore front and centre.
Your verdict & hourly bar
10-day outlook & best window
Every metric, explained
Tuned to your setup
Sample screens with example conditions — not a live forecast. Your verdict is worked out for your boat, your launch site and the hour you ask.
Forecasts come from independent, professional-grade providers — Copernicus Marine Service and Open-Meteo — the same sources trusted across the maritime world.
GO / NO-GO turns that data into a decision, but it never pretends to be more than it is: a decision-support tool for recreational boaters.
Conditions guidance only. Marine forecasts are probabilistic and the sea changes faster than any model can predict. No verdict is permission to launch. The skipper's judgement is always final — and always sole.
The verdict for today is always free. A free account (just your email) keeps your boat and marina together; Premium plans further ahead and keeps an eye on the way home.
| What you get | Free | Premium |
|---|---|---|
| Planner | Today only | 10 days |
| Launch sites / marinas | 1 | Unlimited |
| Home call (when to head back) | — | Included |
| Earn commission on referrals | — | 20% recurring |
| Price | $0 | $2.99/mo or $19.99/yr |
Already using GO / NO-GO? Thank you for being early. Everyone who was using the app before Premium launched keeps full Premium features, free. No action needed: create your free account in the next update and your place is kept.
Free accounts and referral commission are live in the app now. Premium can be bought on iPhone today; on Android it arrives with the next update, which is with Google for review. Every new account starts on a 14-day Premium trial.
Premium members earn 20% of net revenue on every Premium member they refer, for as long as that member keeps paying. Approved creators earn 35%. Free members can share the app, but only Premium members and approved creators earn commission.
Create your free account and your personal referral link and code are waiting on your dashboard. Share it anywhere.
Anyone who signs up through your link, or uses your code, is tracked as your referral.
As a Premium member you earn 20% of net revenue on each paying referral, every month. Payouts start at $20; smaller balances roll over.
It's live and free on the App Store and Google Play — download it, set up your boat in a minute, and get your first verdict today.
No. It's a decision-support tool that reads marine forecasts for your boat and gives you a clear verdict. It's not a navigation system, not a certified safety service, and never a substitute for proper seamanship and local knowledge.
Each hour's wind, gusts, wave height, wave period and visibility are compared against limits set by your boat type, crew and plan. Whichever factor is worst sets the verdict for that hour — so a calm sea with vicious gusts still reads amber or red.
From independent, professional providers — Copernicus Marine Service and Open-Meteo. GO / NO-GO doesn't modify the data; it interprets it for your specific setup.
Your boat profile stays on your device. The app uses a free account (your name, email and a password) so Premium, the trial and referrals work. We use your email to run your account and, only if you tick the box, to send offers and news; we never sell it. No tracking, no data sold. Your coordinates are sent to the forecast provider to fetch the forecast for that spot, and are never stored or linked to your account. See the privacy policy.
Seven profiles: RIB, bowrider, cabin cruiser, PWC, power catamaran, sailboat and sailing catamaran — each with thresholds tuned to how that class handles real sea states.
Free: today's verdict, a day-of planner (today only) and one launch site / marina, with a free account. Premium ($2.99/month or $19.99/year): a 10-day planner, unlimited marinas, the home call (when to head back to the dock) and the chance to earn commission on referrals. Every new account starts with a 14-day Premium trial. If you were already using GO / NO-GO before Premium launched, you keep full Premium features, free, as a thank-you. Premium can be bought on iPhone now; on Android it arrives with the next update.
Right now — GO / NO-GO is live and free on both stores: the App Store for iPhone and iPad, and Google Play for Android.
