The main purpose is not to store the notes, but to create a way to easily hand the note as a piece of paper. Ideal scenarios of use: you want to remain silent, you want to be discreet, you can't talk, etc.
Notes Foss Alternatives
Notes Foss is described as 'Notes is an open source and cross-platform note-taking app that is both beautiful and powerful' and is a Note-taking tool in the office & productivity category. There are more than 50 alternatives to Notes Foss for a variety of platforms, including Mac, Windows, iPhone, iPad and Android apps. The best Notes Foss alternative is Zim, which is both free and Open Source. Other great apps like Notes Foss are CherryTree, Cryptee, Turtl and Dendron.