An app can ask for the permissions, but you can deny them from the OS. The app might still not work, but it's not getting access to your camera or mike unless you want it to.
Apple and Google both FUBAR'd this.
Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!
I think there's a world market for about five computers. -- attr. Thomas J. Watson (Chairman of the Board, IBM), 1943