Kevin Yun, founder of DESIGNATION Labs, wrote a letter of recommendation for Zack Chan. Yun founded Fitsby, a startup focused on gamifying gym-going through social competition. Zack served as VP of Marketing from August 2012 to May 2013, leading marketing initiatives that helped successfully launch Fitsby's beta mobile app and gain national media coverage. Zack's resourcefulness and intuition were instrumental in strengthening Fitsby's distribution and branding. Yun highly recommends Zack for his capable work wearing different hats at the early-stage startup.