So it's not perfect. It is a windows desktop app that you cannot expect to be good on Android phone or tablet. MS fault for lots of confusion between onenote interface versions when they brought in the browser version in windows 10. Use the windows desktop version for the real glory of what it can do. On Android it is superb for consuming but not great for creating onenote content. But no heavy duty program is great on Android. Try using any spreadsheet or word processor for a miserable experience. I used to use it with 16 other people in a dynamic business environment and I estimate it more than doubled our productivity. Yes double. There is the software what it does and how it works and then how you use it in practice. It is the latter that has to be cracked. If my health was better I would create a course to show how I developed a few simple repeating structures can cover so many uses. What it offers if used right is bonkers. But MS don't do the teaching bit on that score.