You have several ways to view notes on a computer or mobile phone.
Tap "Export" icon in note menu, select note page and export format (PDF/PNG) then tap "export".
Connect your computer with a USB cable, and then you can find the exported notes in the "EXPORT" folder of Supernote.
Tap "Export" icon in note menu, select note page and sharing format (PDF/PNG), tap QR code to share or email sharing (need email login).
If you have registered Supernote account, you can view your notes in Supernote Cloud and Supernote Partner app by synchronization function.
For Dropbox, you need to export the notes file first and then view the notes in the "EXPORT" folder.