The app combines the strongest aspects of OneNote and adds additional features – making Outline one of the best OneNote alternatives.Ī definite advantage is clarity: Just like OneNote, you can collect your notes in different books, which in turn can then be organized into as many tabs as required. The best part? Outline is totally compatible with OneNote. This app is particularly suitable if you want to record notes on your smartphone or tablet on the go. Whether it is school, university, work, or everyday use, the digital notebook Outline is very popular with Apple users.