The web version of our system allows credit cards and PayPal. If you do not have a credit card, PayPal is a great option for you as you can link your preferred payment method to your PayPal account. PayPal accounts have no monthly fees and you can get one in almost every country and currency.
In addition, for the Fearless app for iOS and Android, both Apple and Google have options other than credit cards such as PayPal and App Store Gift Cards that allow you to get a free trial without a credit card. As long as your account is setup already in your iOS or Android account settings, you should be able to get your free trial without a credit card on your Apple or Android device.