The app space in general might be crowded but the weather market for the Flowx type of app is not so crowded. Windy (and Ventusky) is our closest competitor. Windy initially targeted extreme sports but now seems to target the larger extreme weather (hurricanes) notification and warning market, i.e., high-volume. I believe there is enough room for Flowx alongside Windy, etc... by targeting a niche market that require more in-depth and technical weather data, e.g. farmers.
Technically, Windy is based on the code from https://earth.nullschool.net which limits them to that code-base. Flowx is written from scratch and is different by design. This means I can do different things, e.g., the smooth swiping. So I think I can compete with different techniques.
As an engineer, I am guilty of focusing on features and the product over marketing. So my marketing is lacking. Though, I'm looking into writing about my experiences with the weather app.
In summary, I think there is enough room in the advanced weather data market and can compete through niche markets and technical features.
Can you share a few pointers on competing in a crowded market.