Standard Notes is a powerful encrypted note app available free for all devices and web. The app is fully encrypted end-to-end so not even Standard Notes employees can read them if they were subpoenaed. Notes automatically sync across devices for free. The app is also open-source on GitHub meaning the source code is open so that others can see how the code is written to ensure there is nothing suspicious happening behind the scenes with full transparency. Standard Notes source code has also been audited by a third-party auditor and you can view the report here.
You can use Standard Notes for free and you don't even need to sign up to try it. You can check it out now at https://app.standardnotes.org/ and start writing notes. However, if you want to save your notes, then you may want to create an account. You only need an email address to create an account and you don't even have to give them a real one either. The Extended plan offers a few extra features such as encrypted attachments stored in google drive or dropbox, unlimited access to extensions, editors and themes, automated backups to email or cloud service, two-factor authentication, and note version history. The Extended plan goes for $9.99 a month, $49.99 a year or you can get a five-year plan for $149. If you are a student (which you should be if you are military and use your tuition assistance) then you can get a 30% discount on the one year or five-year plan. That comes out to $104 for five years or $1.73 a month.