The iOS app is looking great! Initial thoughts are that the logout button and app information is placed a bit oddly under the balance info screen and should maybe be under a tab of its own?
That button is all about Your card, and it displays the most important aspect of your card, balance, on the button.
Thanks a lot @ChrisMash for your feedback 
You’re totally right about the “Logout” button, it will be moved to it’s own profile section 