UI Design Daily - 1073 open-source UI designs, updated daily
Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.
Magnus UI - A utility-first React Native UI framework
Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.
React Native Paper by Callstack - Material Design for React Native (Android & iOS)
A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.