The best mobile solution for pupillary distance (PD) measurement with camera.
TryOn basic eyeglass frames (in-app purchase)
Check your interpupillary distance (IPD) before buying eye- or sunglasses or VR headset
Beta version with more accuracy improvements is currently available:
In Google Play app see the app details, make sure you scroll down as Beta information could be at the bottom of the page. Tap " I'm in" and then "Join"
Or use this link: https://goo.gl/bbPE55