will you release a non-working App or an App that take one year to load? I don't think you will do such thing. Identifying a wrong App and functionnal issue is something formal (either it work or not) but when it come to UI it's a different story.
You can spend days building an UI you think is good but later no one will use it because it's bad.
No one will accept a fast App with a bad UI but everyone may accept a laggy App having a perfect UI.
will you release a non-working App or an App that take one year to load? I don't think you will do such thing. Identifying a wrong App and functionnal issue is something formal (either it work or not) but when it come to UI it's a different story.
You can spend days building an UI you think is good but later no one will use it because it's bad.
No one will accept a fast App with a bad UI but everyone may accept a laggy App having a perfect UI.
I guess you have no experience in Finance world :) Not everything is IPhone app...