Wrong App Purchased

Hi.

I have an Iphone 5 and started using 'The Room Pocket' for free. I really liked its features and decided to buy its full game version.

When i typed the words in the search bar at my Macbook Air, I clicked it and immediately bought it. However, upon closer and longer inspection, I discovered that it is for Ipad and after a few minutes of tinkering with the Iphone, I cant find any way to transfer it to my Iphone. Please help.

Also, is there any same game app(The Room) for the Iphone 5 at the moment?