Do you share your scale with other users? I personally do. And I like to have a quick look on their curves from my iPhone thanks to Wiscale. The good news is that this application got user-friendlier. As a matter of fact, it is now very easy to switch between the different accounts you have access to.
To do so, lean over your iPhone to display the dashboard. Then click on the name in the top right hand corner. The list of all your users will roll out. Tap on the one you wish to see and Wiscale will directly show it.