Yes, you do need to provide your credit card information for the free trial of The Dyrt PRO.
You can upgrade to PRO either on our website or through the app. If upgrading on our website, you'll enter your credit card information. If using the app, Apple or Google already have your card information on file. While you might get a receipt that says “thanks for your purchase”, it is $0 until the trial period is over. Then, if you choose to continue, the annual membership fee will be charged.
Note, you can go into the app at any time and adjust the auto-renewal settings however you like. If auto-renew is set to on, then you will be charged the annual membership fee the day the trial expires.