Jeff Smith is a co-founder of the popular app, smule. Smule is a well known app that has taken the world by storm. It is a musical app that allows users to listen and play music as well as sing along with it. According to the statistics over 350 million people across the world have used the app in the past. Which is crazy because that is 4% of the entire world’s population. Jeff Smith has also been included in other app creations that all deal with music. The man is simply inspirational to young entrepreneurs.