Question
For example, Alexa shows global ranking, US ranking, how much time users spend on site etc. Is these data actionable for the entrepreneur? What are other tools you use?
Answer
Alexa is probably the worst tool you could use specially if you are trying to gauge international traffic. Try something more advanced like similarweb.com to measure traffic volume and geo breakdown. Appannie.com will help you to analyze apps on itunes and google playstore.