PSA: Nova Launcher's owning company sells their user data. It was a good launcher when it first came out, but it's been nothing but a downward spiral from there.
Edit for clarity: I don't mean the app itself. It is owned by an entity that exists to sell consumer data.
I've amended my comment to make it more clear. I didn't mean to imply the app sends your data to third parties, only that the company who owns it profits off of third party information brokering. Where that information comes from is beside the point in my opinion.