Notion and OneNote are top-notch note-taking apps with different approaches to handling notes. Notion is a flexible all-in-one app that allows users to build their own productivity system, collaborate with others, and store data on the cloud. It has powerful AI features, including generative AI and Q&A, which can simplify complex topics and surface lost information. OneNote, on the other hand, is a free note-taking app that offers rich text notes, drawing tools, version control, and offline mode. While it lacks some of Notion's features, such as unlimited cloud storage, it excels in its ease of use and flexibility for capturing ideas in different formats. Ultimately, users should choose Notion if they want to build their own productivity platform or collaborate with others, while OneNote is better suited for those who need a powerful note-taking app ready out of the box or just starting out with note-taking. Both apps integrate seamlessly with Zapier, allowing users to automate tasks and connect them to other apps in their tech stack.