VisualDx is a diagnostic clinical decision support system with a strong dermatology component. It represents a wide variety of skin tones.
Step 1) First create an account while on campus, or using the VPN. Click "Get the Mobile app" and follow the instructions to register.
Step 2) On your device, find VisualDx in the Google Play Store or iTunes App Store.
Step 3) Download the app and log in using the account you created.