JoeNote is a totally free app, developed by a single person, that allows you to create notes and insert a reminder, which will notify you of the event via an in-app notification, you can also view the notes in the calendar view, for better visibility. If you have any suggestions or appreciate the work done, I would be grateful if you offered me a coffee, thanks
Available in Play Store
https://play.google.com/store/apps/details?id=it.note.joeNote&pcampaignid=web_share
App Store