We do not share any of your financial data – they stay on your device only. The exception is using the sync feature – then your data will also be on Apple’s iCloud and Dropbox servers and covered by the privacy policy of Apple and Dropbox.
Besides, there is a PIN protection add-on that allows you to secure your in-app data with the password.
Users can also enable Touch ID as well as Encryption option to encrypt their data before sending it to iCloud or Dropbox.