What credit or debit cards can I use? KREW Member - Runner November 05, 2014 22:59 We accept Visa, MasterCard, Discover, and American Express for payment. Related articles How do I check my membership status and account information? Is it safe to provide KrowdFit my credit or debit card information? Overview of the KrowdFit App The KrowdFit Wellness page. Comments 0 comments Please sign in to leave a comment.