Not only is it basically adware and hasn’t helped me, a developer who works with different files all the time, in 3 months (ZERO times total), it can not be deleted by simply deleting the app normally. This is very deceiptful for an app to do because it keeps its data on your hard drive which wastes space, meanwhile when you delete an application you’d expect it to be completely removed. Many apps (too many), however, keep a simple preferences file to save your preferences if you decide to install again, which I’m fine with. However, Open Any File still will occasionally open itself even though I’ve deleted it! I’m not going to go ahead and call it spyware because way too many people do that to every app that upsets them, and this app has too many downloads to likely be spyware. However, the fact that it runs after being deleted is quite unsettling.
Just google the file extension!