Pop Color Puzzle - Smash Block comes from Kui Tan.  The object is to place the squares in the grid so that the outside edges match and then explode. The puzzle is solved when all the outer & inner rectangles are gone.

Definitely an interesting game.  I'm not sure if the scoring has a chain-reaction.  There are 25 levels. I've done about 14. They get complicated & clever.

There's an infinite mode where the object is to get a high score.  This mode is okay, however, it never ends.  There should be a much smaller grid for this.

Description from the App Store:
***Here come the most challenging color game: Pop Color Puzzle***
With 25 stages of blocks as well as various free modes, you will definitely enjoy a colorful game jouney playing with this puzzle game. It's logical, predictable, beautiful and also it's super fun. It's more than a crush game, you can predict the score you can get but you need to think more logically and deeply to reach a higher point. The Infinity mode gives you smooth flow to deliminate the blocks. While in the Master scene, you need stratagy, even complicated stratagies to organize a serial of blocks. Only because it's one shoot, you only have once chance to make it as perfect as you can.  One more, one more block! You will always say this to yourself when you play this game. Sometimes you are so close to it and you just need a little help. Don't worry, call a Bomb to help if you stuck. The bomb has no magic, it j...