SUM IDEA

I think this game is very well designed, and the mechanics are fun. It makes me think mathematically, and I like that each level is quick (they do not require a ton of time to complete).

I don't have many games downloaded on my phone and this is one of few that I really enjoy. The concept is simple, but the game isn't. Yes some levels are easier than others but overall it's a fun challenge that's very addicting. I ultimately gave a rating of 4-stars because of the wait time at different intervals (and I'm not paying to unlock immediately; it's a waste IMO). One final note -- level 97 is not a "fix." There's a way of beating it.

Unfortunately after beating 40 levels, you either make an in app purchase, or wait 4 days. I can understand it is a free game and that the makers want to make some money. But coming from someone who is perfectly willing to wait for a bit rather than spend a couple bucks, 4 days is a lot of time. A lot. As in enough to make me delete it. This game deserves 5 stars, the company who made it... deserve much less.

Now that you can listen to your own music this is my most played game. Thank you developers!

Almost convinced level 97 is a trap to get you to pay for upgrades. I've almost made it to the end, but I'm not going to pay to win. You can get around the 3 day unlock delays by manually setting your clock forward.