Horrendous UI

Is there a computer opponent? I cant tell. It seems like Im supposed to play both sides, because nothing happens unless I tap one of these obscure icons and place a piece of the other color myself. What does the flag button do? What do any of these buttons do? I tried the tutorial, but its just a text document about the rules of Go. I already know those. I want a tutorial on how to use this obtuse and incomprehensible app, but now I cant even get out of this rule book document without closing the app. Save your money. Do not buy this.

K Horseman about SmartGo Player, v2.3