Is it possible to categorize the trips?

Yes, mileage type tracking is a feature that can be added by following these steps:
  1. Access the TMM Store (tap here to learn how)

  2. Scroll down and tap Add Mileage Type Tracking.

  3. When you are ready to purchase, tap the Buy button and follow the instructions.

Buying this add-on allows you to generate reports with total mileage and total reimbursement for each mileage type.