If your reps travel to multiple customer sites and you want a simple interface to capture all these visits, you should try using Trips.

Starting a trip is easy. Navigate to Settings -> Trips. Hit the '+' on the bottom right.

To log a visit within a trip, tap on that trip.  Hit the '+' on the bottom right. Select the customer you met and add a note or attachment. The address is added automatically.

When you add the visit here, it gets logged into the customer history and is visible on the customer's timeline and on the Roloscope.

You can get a list of locations visited and the total mileage on that trip.