To have fewer buttons taking up screen space I'm putting "About" information like version number and whether the app is up to date at the bottom of my Settings screen. I've noticed that the Facebook Messenger Android app does this, but is there a better way than calling the button "Settings"?
Design for 80% of your users in 80% of cases. It's likely that putting everything under settings will work just fine.
it's may be a new idea, what about a mixed symbol ?
maybe, the gear symbol can consist an "i" symbol inside.