Although a lot of developers are yet to accept it, it isn't a coincidence that the most popular and well-received apps for mobile devices are ones that look great and are simple and intuitive to use. Smartphones and tablets generally provide a limited landscape and usage area, and it is important that the user-interface lends itself well to the functionality of the app to provide a great experience for the user. After all, they are the ones who matter most. The HoloNotes note-taking app for Android-powered devices is one such example on Google's mobile platform that definitely ticks those boxes.