Is it possible to display map in tryton app? Or should I build web-app?
Plugins take too much time.
Its possible by using a plugin.
If you do not want to run a plugin you can build a custom route on you server and open it using an url widget in tryton.
Is it possible to integrate with another web app using a URL widget, similar to how it would work if I built a web app for face recognition?
Not exactly in the Tryon app, but in the browser with the Google Maps Module — Tryton module to link addresses to Google Maps