Whats-app was incorporated in 2009 by Brain Action and Jon koum both former employ sis of yahoo. after koum and action left yahoo in September 2007. the do traveled to south america as a break of work. at one time they applied for a job Facebook but where they rejected for the rest of the following years koum replied on his$400, 000 saving from yahoo in January 209 they perchaseing an iPhone and realizing they play store will soon industry of app