Aircraft
Gulfstream Launches Performance App for G650/G650ER
It can calculate balanced and unbalanced field lengths and speeds, takeoff speed distance visualization and remaining stopping distance, among others.

Gulfstream Aerospace has released an iOS app that enables Gulfstream G650/G650ER pilots to calculate takeoff and landing performance data quickly. The Gulfstream Performance app, a companion to the aircraft manufacturer’s PlaneBook electronic suite of flight crew information, displays output data graphically.