The user info button is below the main screen to the right of the invite friends button.
It's very important to determine your KIngdom Power.
This feature is unlocked at Kingdom Level 4.
Clicking on this button opens a list of your kingdoms basic attributes.
- Guild (coming soon!)
Information on each of your heroes, and a breakdown of how much of your battle power comes from heroes, towers and magic. Not nearly as complete as the info you can get from the comparison with other heroes on the Fighting Pits "Top Ranked" feature.