I used the free version of Team Viewer but ultimately needed to purchase the paid version. Happened to be out of town, and my account was flagged as "commercial". So, being between the proverbial "rock and a hard place", I purchased an annual license. Coming to the end of the year, I found another program that met my needs for 10% of the price. But found out that Team Viewer had "automatically" charged me for a second year. When I contacted them, the emailed back that I had failed to cancel a month before the contract ended, and so was out the money.:>( "Read the fine print", they said! So... I would say that Team Viewer is a good program, but has more features than I need, and costs more than I can afford. Getting in touch with them by phone is unreasonably difficult if not well nigh impossible. SO WATCH OUT!
If someone from Team Viewer would happen to read this, my name is Jim Siegrist. And I will be very glad to add to this review that you do offer refunds in situations such as mine, if you would offer to refund.