Ashish Sharma, IITM alumnus. Codelearn is his 3rd venture.
Founded : 2012
Codelearn is codecademy & heroku combined. The idea is to teach coding through app development & not through boring syntax.
The first tutorial offered is on Ruby on Rails. There are around 65k users who have visited the site among which 4.5k signed up (sign up rate of 6% which is significantly higher than industry average).