ATB Viewer

ATB Viewer lets you view your iOS backup files and data. It can load your latest backup from iCloud automatically, and apply recent changes if using iCloud syncing.

Alternatively, you can select manually a backup file to open (e.g. from Dropbox). After entering your PIN (if enabled in the backup file), you then have full access to your accounts, budgets, reports, and transactions. The only things you cannot do is add or edit transactions, or change (some of) your settings.