When you first run this app, it allows you to enter your credentials to The Routing Project. Subsequently, you only have to tap the icon to open a map in a browser and see the location of those with the same Org ID as you. To change your credentials (to re-enter them), go to TRP On Ramp's "App info" screen (Settings > Apps > find TRP On Ramp in the list of Downloaded apps and select it), tap the "Clear data" button, then run TRP On Ramp again.
What's new in TRP On Ramp 1.3
- bug fix to stop crashing when re-saving credentials.