Free at the helm. Premium for deeper water.

The free app costs us almost nothing per user, and we intend to keep it that way. The Premium layers are different: bathymetry tiles, rolling weather-model data and continued development have real ongoing costs. A small subscription — or a one-time lifetime purchase, if you prefer — keeps those layers running without ads, accounts or selling data. There is nothing else funding Marinate.

AIS is one of the seven Premium layers. Paste a free API key from aisstream.io into settings and Marinate overlays live vessel traffic on your chart, computes CPA/TCPA for every target and raises the collision alarm when a ship will pass too close, too soon. The safety features that don't depend on a live data feed — one-tap MOB with auto-return and the anchor alarm — are free on every plan.

Yes. Subscriptions will be managed entirely by the App Store or Google Play, so you'll cancel the same way you cancel anything else — in your store's subscription settings, in a few taps. You keep Premium until the end of the period you've paid for. Cancel during the 14-day trial and you're never charged at all.

Everything you need to navigate: the full nautical chart with buoys, lights, depths and marinas; live GPS with instruments; routes, markers, track recording and the trip logbook; Go-To navigation; tides, currents and tap-anywhere weather; offline chart downloads per area; GPX import and export. And the core safety features — one-tap MOB with auto-return and the anchor alarm — are free on principle, not as a teaser.

Yes. All purchases will go through the App Store or Google Play once Marinate launches, and the price you'll actually pay is the one your store shows — converted to your local currency, with any local tax applied by the store. The figures on this page are the USD reference prices; small regional differences are set by the stores, not by us. We never see your payment details.

It keeps working. Marinate is offline-first, and a chartplotter that quits mid-passage because it can't phone home would be worthless. Downloaded charts, depth shading and your recorded data stay available at sea; your subscription status is simply re-checked the next time you're back online. Layers that need a live connection by nature — AIS traffic and fresh weather runs — resume when you have signal again.