I’m an emergency physician and built this because measuring visual acuity is often slower than it should be. QuickAcuity uses a short-distance phone workflow, adaptive testing, and swipe/tap/voice input to get a quick 20/xx result - all you need is a smart phone. No mounting of a chart on a wall, getting a measuring tape out, and need for a 2nd person to score the test. It is not a diagnostic device and does not replace an eye exam, but it is meant to make a common screening workflow fast. No account required, 10 free tests, iOS and Android.