Color Kakuro is nothing like genuine Kakuro (formerly known as Cross Sums).  A better title would be Color Minesweeper. Oh well.
  Each square is either blank or is an actual clue.  Suppose a clue square has 1 yellow, 1 red, 2 green and 0 blue. That means that the surrounding blank squares will have 1 yellow, 1 red, 2 green and 0 blue.

Most of the levels have unique solutions.  There are 200 levels ranging from beginner to master.

At the moment, I've done 150 levels. I positively love this game and it's totally free - provided that you do all the levels and not skip around.  The ads are annoying, but that's still okay because I can't get enough of this. Another negative: the program crashes every so often. I uploaded the latest Ipad software, and the game still crashes. But I keep playing it.
Let's end on something positive: these puzzles are hand-crafted.
https://play.google.com/store/apps/details"id=com.alphaunit.kakuro&hl=en
https://itunes.apple.com/fr/app/color-kakuro/id977635675"l=en&mt=8

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