Myopia Measurer Android App

Tl;dr: I launched an app. Get it here: https://play.google.com/store/apps/details?id=com.myopia.measurer The original project About 18 months ago (wow, time flies!) I built an Arduino-based device to measure your eyesight (read more about it here). However, it turns out taking it to the next stage - that is, PCB design and manufacturing - is prohibitively expensive (hundreds of £s). Using a breadboard-based device on a regular basis was not convenient, due to the physical size and fragility.