The Personal Vision Tracker (PVT) app will work on iPhone models 7 and newer, or any Android phone with a screen resolution of 250 PPI or greater. If you do not know the pixel per inch density of your Android smartphone, you can use the PPI calculator available here. If your smartphone has a PPI that is lower than our minimum of 250, the smartphone will not work. We have tested smartphones below 250 and found that the accuracy of the tests, even with high confidence ratings, had too big of a gap compared to those smartphones above 250.
If you have any questions regarding your smartphone, you can contact firstname.lastname@example.org.