Duolingo came on the scene in 2011 operating as a teach and translate language learning app. It has since transformed into a $700+ million business, and become the first EdTech app to top $140 Million in annual revenue. Pretty good numbers, for a language learning app that still doesn’t charge
Kalil de Lima is a full-stack developer on the Rootstrap team and writes about his experience tackling difficult problems for our many clients. You can also follow Kalil on LinkedIn. Introduction Recently, one of our clients asked us to evaluate the performance of their app in a production environment. To give that
