SimCity BuildIt is a remake of SimCity 2013 for Android and iOS, however with many differences in the game play. After seing it in the Android Play Store, I’ve downloaded it and played it for a few days - and then deleted it, because the game is an attention whore.
You will buy your copy of SimCity 2013, but the iOS and Android versions are for free. Or so you think. But make no mistake, you won’t get very far if you do not spend real money on the game, even if you play it all the time.