My cofounder (hn:roger_lee) and I started working on Captain401 because we both had bad experiences with 401k accounts. As an employer, he kept putting off setting one up because of the time and cost involved. As an employee, I became frustrated by the archaic web interface my Fidelity plan had, and felt overwhelmed by the task of choosing investments.

Captain401 is designed to make both sides of the 401k experience as pleasant as possible. We offer paperless administration to employers and automatic ("robo") advising to employees. We hope a tool like this will bring retirement savings to startups that had previously considered themselves too small or too busy for a 401k.

We're especially interested in hearing from HNers who run their own business: have you set up a 401k plan for your employees?