Pros
1. The people genuinely care for the company and the people there. 2. The company supports a healthy lifestyle with healthy snacks, onsite yoga classes, and actually encouraging you to take yoga class or take PTO as needed. They seriously won't judge you for taking doing what you need to do to take care of yourself. 3. At such a small company, you have the potential to make huge impact. They are agile so things ship out relatively fast. The things you make help millions of teachers and parents world-wide. 4. The convenience of Caltrain & the amazing food selection downtown is amazing.
Cons
If you live in SF, San Mateo is a little far. BUT Caltrain is right there and many people in the company live in SF/San Jose and make it work.