Planning a beach day shouldn’t mean checking five different apps and hoping they agree.

That’s the problem behind CoastCheck, a map based app for comparing beach conditions before choosing where to go.

I started with the map because beaches are all about place. You can search for a beach, explore what’s nearby, or browse a catalog with more than 57,000 location records. Wave height markers put one useful condition directly on the map, so you can scan the coast before opening a beach card. Map styles include satellite, topographic, street, daylight, and dark vector.

Tap a beach and the details come together in one place: wave height and period, air and sea temperature, wind, UV, rain chance, nearby beaches, and a photo with its attribution. Forecasts show their model and retrieval times. If tide data isn’t available for a location, CoastCheck says so. I wanted the interface to be useful without pretending the data is more certain than it is.

From there, I built out the rest of the planning flow. You can compare beaches, save favorites, make lists, revisit recently viewed places, and share a beach with friends or family. Directions include different travel modes, estimated trip times, and step by step routes. The profile keeps saved places and preferences together, including beaches saved in the browser before signing in.

A lot of the work was in making the details feel like one product: the map markers, glass panels, beach cards, forecast views, search, and navigation all need to support the same decision. Where should we go, and what can we expect when we get there?

CoastCheck uses modeled weather and marine forecasts, not sensor readings. Conditions can change, so the goal is to give people a better starting point for planning, not a guarantee of beach safety.

This build also showed me that Base44 is more than a way to make websites. It can bring together maps, data, and interactive workflows in a web app built around a real everyday problem.

CoastCheck: https://coastcheck.base44.app/

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