I don't know if this already exists or not, but I'd like an app for iOs/droid that shows all of my installed apps and what permissions they need -- in a compari

I don't know if this already exists or not, but I'd like an app for iOs/droid that shows all of my installed apps and what permissions they need -- in a comparison/grid format. It's easy to agree to all kinds of stupid permissions when you're first looking at an app, but later on, having dogFood 3.0 phone home all the time when it's never used is not-so-good. I'd like to go back periodically and look at all of my apps, at one time, from a permissions standpoint.