Author here. I build this to learn and ship something with Elixir. I know it's not a new idea, there are plenty of alternatives to track unfollowers, but couldn't find any that works inside twitter. I got the idea recently reading some political tweets about a situation in my region (Catalonia, Spain). I usually follow tech people and this days they're tweeting political stuff and I wondered how many people unfollow them after those tweets.

I'd appreciate any feedback :)