OneNote is a digital note-taking app developed by Microsoft that provides a single place to keep all your notes, research, plans, and information. With OneNote, you can record audio notes and transcribe your spoken words into text. OneNote is similar to Evernote; it's Microsoft's note-taking app available for Windows 10 and above, Mac, iOS, and Android. It’s also possible to send Excel worksheets, Word documents, Powerpoint presentations, Outlook files, and other Microsoft Office documents to OneNote.