Additional info for the lazy: the name of the company is “Gravy Analytics”, hence the name “Gravy Scanner” for this app. It’s a large data broker, and they don’t bother with pesky little details like “informed consent”.

Anyway, they got hacked a month ago, and the hackers threatened to publicly release all the data.

https://slrpnk.net/post/17048112

Most likely, that means you’re clean. On mine, the output is just a white screen with a list of the affected apps… Clicking on one of them takes me to that app’s settings.

It does that one thing, with no explanations or instructions, so it wouldn’t surprise me to learn that it doesn’t show a message to indicate that nothing was found.