Ari is the Android lead developer for Yo, a simplified messaging app . In 2012 Ari developed the Android "Red Alert" app in his basement to provide real-time alerts when rockets were fired into Israel. To date, "RedAlert" has over a million and a half downloads and has been featured in The New York Times, CNN, and Fast Company. In 2013, Ari was named one of the top 10 mobile developers by GeekTime. Ari teaches an Android development course at the Hebrew University, training the next generation of mobile devolopers. Ari lives in Jerusalem with his wife Brachie and their two sons.