EyeQue PDCheck - EyeQue PDCheck is a small, lightweight, portable, and easy to use tool that helps one measure Pupil Distance (PD) using a smartphone.
OptiExpert - OptiExpert is free to use application that will make it easier for eye care professionals to measure patients’ vision and contact lens power requirements during an eye examination.
Pupil Distance PD Measure - Pupil Distance PD Measure is an application that comes with the most effective way to measure Pupil distance quickly.