That’s a great question. I’m using the API from Open Weather. It’s free for the first 1000 requests, then like fifteen cents per 100 after that. They also have a free version of their API.
Eventually, if enough people start using it, I’ll switch to the free, limited version. So I don’t share this app with others much.
What am I getting out of it? I built it because I was tired of other weather apps and also wanted something to add to my portfolio since I’m trying to switch from SDET to Android developer.