https://techcrunch.com/2019/09/20/digi-prex-online-medicine-delivery-india/ > Another startup in India is cashing in on the popularity of WhatsApp, the most popular app in the country with more than 400 million users, to build a business around it. > Digi-Prex is a seven-month old startup that runs an eponymous online subscription pharmacy in Hyderabad and serves patients with chronic diseases. Patients share their prescription with Digi-Prex through WhatsApp and the startup’s workers then deliver the medication to them on a recurring cycle.