Zattoo gives you the possibility to test Zattoo one month for free.
To activate the option please login to your Zattoo account and go to Shop. There you will find the option 30 days trial month:
What you should consider?
Before the trial month is activated you will be asked to fill in your credit card or your PayPal account. This is because the trial month will have the auto-renewal option on. After you activate the trial month you can deactivate auto-renewal anytime you want. You will find further instructions here.