The Projectile Physics app has been released for iOS. This app makes it easy to solve two dimensional projectile motion equations by entering the measurements you do have, and seeing the rest get automatically calculated.
About Projectile Physics
This app is a projectile physics calculator designed to solve for all of the components of a typical projectile motion problem. The app solves for both the vertical and horizontal components of the distance traveled, the constant acceleration, the initial and final velocity, as well as the time. These factors are solved for in real time in order to help you get back the factors of the equation quicker.