iWatcher app for Iphone- how to use?

I installed the free iWatcher app on my Iphone but cant make heads nor tales of how to set it up or use it??
How do i adjust settings to use half points as well as full points?
Any tips on how to use it would be great thanks!

Also if there is any girls from Ireland who successfully downloaded the ww app on their itunes could you tell me how you did it? I have tried setting up a new account in the uk version but it wants all my credit card details and sure the billing address wont match up to the credit card if i give a fake address iykwim.:cry:

If you're using half points I assume you're still on Discover? If so, I don't think the iPhone app supports the old Discover plan. I think you have to have an eSource username and password in order to sign into the app. x

If you look at the settings page near the bottom you can select to use decimal place And you need to make sure calculater is set to old and European
Hope this helps I love the iwatcher app and use it all the time