I also work on a note-taking application and my thoughts are: ability to have secure notes is somewhat important but it&#x27;s not important enough to make it a primary benefit.<p>Your app would have to be great at non-secure notes AND have an option to add secure notes.<p>Evernote, btw, does support secure (encrypted) notes. They have a lousy UI for them but the option is there.<p>If you don&#x27;t think that your app is better in at least some ways than existing note-taking apps, that having secure notes will not make a difference.