Currently we don’t have white labeling customization ready on the mobile app for log in screen yet, but we’re working on it. However, please note that the icon and name for the app is fixed by iOS and Android so it will not be changeable.
We also are looking for whitelabeling the app and/or the picture of the tile/app. For this, may I suggest you take a look at openasapp.com, they have a way for every customized app to have their own name and picture. I don’t know how, but it is possible.