IYK is a social and communication Android application developed by CodeCandy Studio. It offers users the opportunity to engage in fun personality quizzes and share them on their Instagram stories. Friends can then guess the user's answers directly from the story, adding an interactive element to social media interactions. Users can view the answers on the IYK app, creating a seamless experience for quiz sharing and participation.

For PRO members, IYK provides exclusive access to PRO Quizzes, the ability to unlock all names without waiting, reveal friends' answers, and VIP Early Access to new features. The PRO version is a paid renewable subscription, with the option to manage subscriptions and turn off auto-renewal in the account settings. Users who opt not to purchase the PRO version can still enjoy IYK for free, maintaining access to its core features.