Apps and permissions

I've been hearing things about the permissions the apps we use (feed, fresh start, ukg) all basically having in their agreement that they can wipe your phone if you quit, or that it gives them access to way more than it should.

My question is if anyone has any sources as to where they are seeing this? I've refused to use the apps on my personal device and just log in through a web browser, in part because of what I've heard and also because the apps are buggy as all hell.