Miitomo was a social networking mobile app developed by Nintendo for iOS and Android devices. The app, Nintendo's first, had users make personalized Mii avatars and converse with friends by answering various pre-made questions and sharing their responses. Miis could be customized with clothing, which available through a shop using a virtual currency attainable through minigames or in-app purchases. Users could also take custom photographs of their Miis, called Miifotos, and post them online.