Deep Link to Android or iPhone app
Universal Link to iPhone app
iOS: swift example:

Example of URL with agency acronym and zoom: https://.passiogo.com/?zoom=14.3
Example with bolder routes: https://.passiogo.com/?boldRoutes=1
Example of URL with lat,lng, zoom: https://.passiogo.com/?zoom=14.3&lat=40.6895219&lng=-74.0464578

Embedded example: