I’d absolutely love to be engrossed by BlockinColor. It has all the pieces to be a top app, but there are a couple things that make it ridiculously annoying. If you play more than ten levels or so, it appears to get really bogged down (I’m not sure if it’s caching issues or garbage collection or ad integration, because everything breaks), and things slow down so much that it basically becomes unusable unless you shut everything down and reboot. It also doesn’t save your state mid-level, so if you’re in the middle of a hard level, and you have to reboot, you have to start all over.
There are ads literally after every level, and if you leave BlockinColor too long when you resume your level. They’re set for a five second skip which is nice, and if they fixed the above issues I’d happily pay to remove them, but given the instability issues I don’t see throwing money at this one until it shows a little more progress.