I'm researching apps that disable cellular phone usage while in a vehicle. The basic functionality of all of these apps (below) is that when the GPS indicates speed of over X mph, the texting and/or calling function is disabled.
Here are some examples: TEXTECUTION (T MOBILE); DRIVE MODE (AT&T); DRIVESAFE.LY; DRIVESCRIBE; CELLCONTROL
MY QUESTION: WHAT, IF ANY, RESTRICTIONS WOULD APPLE PLACE ON AN APP SUCH AS THESE?
It seems like most of these apps are not available on iOS. However, some are--SafeCell; TextLimit; Canary; MobiloPlus; and DriveSafe.LY.
Could someone fill me in on the details as to why one of these apps may or may not be approved? Or, in the alternative, why these other app companies may not offer an iOS version?