One of the best and underrated note-taking apps out there. I would not give up this app for any other paid note-taking app out there. Speed, efficiency, markdown, PDF annotation, sketching (iPad only), password protected notes, web clipper, expanding headers, focus mode, colour syntax for code blocking, themes, backlinking, and so much more. I've used it on Mac, Windows, Linux, iOS, Android and ChromeOS. Upnote provides so much breadth of use, I really don't understand why someone would want to choose an expensive app over it.
