I’d like to provide backup functionality to my app, it’s a financial app.
I’m not really sure what type to provide, dropbox or wifi, or something different?
I just want to provide something simple / quick to develop, so users can import / export aka restore / backup.
Any suggestions / thoughts ?
Possibly the quickest way is to use iCloud – that said, Apple strongly discourage you from using iCloud in apps to store sensitive data. If your data is very sensitive (ie, financial), it sounds like you might need to look into some kind of secure system. Plain e-mail as suggested may not be the best solution.