How to buy Professional? Updated February 25, 2018 07:27 Follow To buy Professional, open the app and press on the '3-dot menu' at the bottom right corner > Truecaller Professional". Related articles What's the difference between Professional and free version? Who can get my number? (privacy setting) What is the 'True' icon in the search results? W10 Preview: How do I enable Caller ID? W10: Why does my call log inside Truecaller look different? Comments 0 comments Article is closed for comments.