As a side project, I designed the landing page for a potential app that would calculate the number of calories you burned and suggest how many drinks you could “treat yourself” with.
Before creating the site, I set up a survey on Amazon’s MTurk to get an idea of who would use this product. I captured demographic information, phone type, and some information regarding athletic activity and drinking habits.
I started by creating a survey with items regarding how often respondents track calories, exercise, and drink alcohol – three main issues with which my app deals. I paid 67 people $0.60 to take my survey on Amazon MTurk. I gathered the information and created an infographic highlighting what I learned. 
Last, I created a digital mockup for a Bootstrap-style landing page.