First thing's first: The entire workout takes just 7 minutes, and it looks super simple. Initially, I was skeptical I could accomplish this much in such a narrow time frame.
The workout consists of 12 standard exercises like jumping jacks, sit-ups, and push-ups. Ten of them require nothing but your own body (you'll need a chair that can support your weight for the others). The New York Times' version of the app shows proper positioning for each, which you do for 30 seconds:
To do my workout, all I used was a yoga mat, the hardwood floor of my office, a wall, and a stool.