Yes. You can choose any the of above listed paid packages and test it without any risk. No credit card is needed to sign up for a free trial.
Once you provide your payment information, your trial account will become permanent and all of your added profiles, dashboards, reports, and other data will remain intact. If you opt not to pay at the end of your 14-day trial, your account will expire.
If you are using a free account and then start a free trial for an S, M or L package, you will get a normal 14-day trial run for the chosen package.
If you are a student developing a Master or Bachelor thesis we have something special for you: social media analytics for free. Please contact us for further information.