A free program for Android, by Victor.Robot.
EV3 Commander is a handy app for controlling EV3 MINDSTORMS vehicles with Bluetooth connectivity. There are 5 different types including download/delete/run/stop program remotely, monitor sensor/control motors, and 3 different motor control modes.
It allows you to download build-in programs to your vehicle and run them remotely. It allows you to set a range of values for each sensor and use the values for controlling the vehicle.
It has a monitor that shows you the values of each sensor and the vehicle's position. It can also be used to control the vehicle's motors remotely. It has 5 control modes, which are designed for the different purposes.