Tide and Weather - SurfTideΔ is a free Android application designed specifically for surfers, fishermen, and marine sports enthusiasts in Japan. It provides detailed tide graphs and weather forecasts, allowing users to access tide information for approximately 340 locations across Japan. The app features a user-friendly interface where users can quickly check the current tide, sunrise, and sunset times. Additionally, it highlights optimal fishing times based on tidal movements, making it a valuable tool for those who enjoy fishing as well.

The app offers hourly weather forecasts for up to seven days, including crucial wave information such as wind direction, wind speed, wave height, and wave cycles. Users can also view weather maps with various charts showing past and future weather patterns. Furthermore, the app includes a news feed for surfing and fishing updates. With its widget functionality, users can easily access their preferred locations, making Tide and Weather - SurfTideΔ a comprehensive tool for anyone engaged in marine activities.