PlugBrain is an app that encourages regular breaks from distracting apps by blocking access at scheduled intervals. To regain access, you’ll need to solve a math challenge that adjusts in difficulty: the more frequently you use the apps, the harder the challenges become, but the longer you stay away, the easier they get. Features No ads No internet required Blocks distracting apps Unblock apps by solving math challenges Difficulty increases with frequent use, decreases with focus How to use Grant all required permissions Select distracting apps Choose your focus interval Stay focused ;)