In at least 3 separate occasions, over multiple patches, over multiple months, the app did not finalize the purchase and does that spinning thing. In at least two of those occasions I resubmitted the order, then was charged twice. In at least one occasion I did not resubmit, and there was no order generated. Edit: soon after I posted above review, app behaved at its worst; my account is no longer accessible on app. There's no way to reach helpdesk (if subway wants to refute, check your emails).