Japanese Ambition released the app version of Rainbow Girlfriend-Niziiro Kanojo（虹色カノジョ2D）. The game is available for both Android and iOS. You can download the game from QooApp.
About Rainbow Girlfriend
Players can create their very own Dream Girlfriend, and customize her face, hairstyle, height and more. There are so many options to choose from to make your girlfriend one-of-a-kind. Enjoy a number of events and special scenarios as you enjoy life under the same roof, but be sure to keep visiting her often, or she may get upset.
iOS Download: AppStore