Space Pairs is a game of matching tiles, tasking you with matching up pictures of planets, stars and galaxies with each other in a classic matching game. There are a few quirks and tweaks to the game to make it more interesting, but at its core, this is really just another matching game -- the same kind you played as a child. That's not necessarily a bad thing, though, and with a clean interface, multiplayer options, and more, it can be a good game for all ages.
When you open Space Pairs for the first time, you'll be greeted with a home menu that asks you to connect with Facebook for sharing. It's not necessary to play and the game is in the Gamecenter, so high scores can be shared there. There is a two-player option here, as well, along with a number of other home menu options. This menu is actually a bit problematic as it scrolls entirely too fast, making it hard to hit the right button. From there, the game starts and it really is just matching tiles. The tiles all appear, then flip over and you must match them as quickly as possible for a high score, with score multipliers when you get combos.
If you or one of your children likes matching games and a space theme, Space Pairs is a decently well-made matching game for iOS. It has some issues with the interface and the graphics look dated, especially in iOS 7, but it's a fun little game with enough challenge and reward to be replayable for some time to come.