Notebook PEA is described as 's - encryption of notes' and is an app in the Office & Productivity category. There are more than 100 alternatives to Notebook PEA for a variety of platforms, including Windows, Android, Online / Web-based, Mac and iPhone. The best alternative is Joplin, which is both free and Open Source. Other great apps like Notebook PEA are Standard Notes (Freemium, Open Source), Google Keep (Free), Microsoft OneNote (Freemium) and Evernote (Freemium).
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor.