Zelle, the person-to-person payments system supported by multiple U.S. banks, will finally debut its standalone mobile app Tuesday as the service attempts to make a dent in Venmo's supremacy in that market.

Zelle has been available within the mobile banking apps of some major banks, including Bank of America, JPMorgan Chase and Citi, since the send of 2016. 

Consumers can use just about any Visa or MasterCard-branded debit card to link to Zelle. The service will not accept credit cards in an effort to keep Zelle a free service.