Catch is a weather app designed specifically for astrophotography, helping users locate stars. It considers the user's current location and orientation to identify the position of specific constellations. Based on weather data, Catch recommends the best days for stargazing within the next 10 days, taking into account factors such as cloud cover, temperature, sky visibility, light pollution, and the moon's size and phase. Additionally, it suggests the most visible constellations based on the current season and date, and provides map-based recommendations for optimal locations for star photography.