In our experience, match three games always go down a treat with kids - although, as is always the way, only with some kids. Jewel Legends: Tree of Life is a match three game, which sees you trying to create rows or three or more matching icons, at which point, they'll explode, and disappear. You finish a level by making a certain amount of matches, and clearing all the blue squares on the grid (by making matches above them), before the time runs out.
Your child will need a fair amount of patience, and a mind for problem solving to manage this, but it's bound to go down a treat with those who like a bit of a puzzle. Anyone who's children will likely be bored by anything that doesn't involve space, pirates, explosions, or preferably all three should look elsewhere, but for those children that like to sit quietly with a crossword, this should go down well. There is a minor amount of reading involved when the game explains what each of the icons do, so for younger children, an adult may have to explain things, or play through the first few levels with them.
As a game based entirely around the matching of identical tiles, there's nothing for parents to worry about here. It's thoroughly family friendly stuff.