You could look for sessions as a count (Session = 1) or create a segment looking the IP Address assuming you have a custom attribute capturing their IP address and sending that to Intercom. Based on the data points, you could then have a post prompting to complete a form via a CTA to an external form or one of the app providers forms.

If you do not already have their name/email when accessing your app, you could also look at using a task bot or custom bot to just prompt and request those attributes.

Thank you!