eNoteFile recommends an ‘active digitiser‘ pen/stylus that has been specifically designed for the digitiser device (tablets like Apple iPad, Android or Microsoft Surface).
With a pen or stylus you can enable 'Pen Mode'
A ‘passive stylus’ (like the Jot Flip) is handy because it can be used on any device, but it’s not especially designed for an Apple iPad, Android or Microsoft Surface device. Whereas an Apple Pencil and Microsoft Surface Pen is an ‘active digitiser‘ specifically designed to ‘connect’ to the device and hence gives a much better writing experience, which eNoteFile utilises in our interface. It has more electronics inside, and hence costs a bit more.