Friends motivate one another: I'll do x if you do y.
Habit Labs is a social health software startup formed in 2011 via a merger of Contagion Health (founded by Jen McCabe) and Health Month (founded by Buster Benson). Headquartered in Seattle, WA, Habit Labs is building a behavior change platform called Budge. Habit Labs is a Y Combinator company (Summer 2010). YC-listed status: Inactive.