Rhys Kentish has introduced 'Touch Grass,' an iOS app designed to limit screen time by requiring users to take a photo of actual grass outdoors to unlock distracting applications. The app employs computer vision AI to ensure compliance, rejecting photos of house plants. Kentish, motivated by his own struggles with screen addiction, aims to provide a humorous yet effective solution. Since its launch, the app has garnered around 50,000 downloads. Users can lock two apps for free or pay to unlock additional features, with a portion of revenue supporting rewilding efforts in the U.K.