If you know how to turn off the ads it's actually a great app – Blokus: Attack, Block & Defend Review

I figured out if you turn off your wifi, and go to your settings and turn off mobile data for this game, you play offline, and.... no more ads, for free! This works with all iPhone games that I have tried. Once you do that, it is actually a pretty fun little app!
Review by Seebirdflys on Blokus: Attack, Block & Defend.