1- Create a free Dropbox account in Dropbox.com (if you don’t have already one)
2- Open Notes Writer then go to the “Projects” location then tap on your project where you have the notes
3- Tap the “Sync now” button on the top toolbar
4- Enter your Dropbox account login and password then select a folder destination for the project
5- Wait until the syncing ends
6- You have the Project copied and updated in Dropbox
7- Every time you tap the "Sync Now" button Notes Writer will sync the project with Dropbox
That project in Dropbox can be accessed also on your computer and you can even edit it using for example the excellent Scrivener app.
How can I import a Project on a different device?
1- Open the new Notes Writer app then go to “Projects” location
2- Tap the “+” button then choose the “Import Project from Dropbox”
3- Login in Dropbox then choose your project
4- The project will be downloaded with all your notes