This app was mentioned in 8 comments, with an average of 1.50 upvotes
It uses an AES encryption standard but I don't know if it has a "continue where you left off" function for notes
You're welcome :) If you have a phone with the google playstore, I'd also highly suggest downloading a note taking app like Private Notepad, so you can take notes that you can always use later when animating.
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https://play.google.com/store/apps/details?id=ru.alexandermalikov.protectednotes&hl=en&gl=US
private notepad is pretty good.
I use this app, it is password/fingerprint protected and fairly straightforward.
I'm not sure if this is what you're looking for exactly, but I've been using this for a long time : https://play.google.com/store/apps/details?id=ru.alexandermalikov.protectednotes
Im using this for years. Never disappointed.
https://play.google.com/store/apps/details?id=ru.alexandermalikov.protectednotes
Offline or cloud notepad
https://play.google.com/store/apps/details?id=ru.alexandermalikov.protectednotes