Picterus is an app under development designed to monitor jaundice in newborns. Untreated jaundice in newborns is responsible for more than 100,000 deaths and a substantial number of permanent brain damages each year. More than three quarters of these deaths occur in the poorest regions of the world, in sub-Saharan Africa and south Asia. Cheap treatment is available through e.g. sunlight, but the diagnostic devices in use today cost around 10,000 dollars, making them practically unavailable in low-resource settings.