The Zelle app is dead. Long live Zelle?

Zelle shut down its mobile app on Tuesday, but the eight-year-old digital payment service will remain available through many financial institutions.

Over 2,200 banks and financial institutions are part of Zelle's network, translating to only 2 percent of users sending or receiving payments through the Zelle app. As most Zelle transactions are done via a bank, Zelle began winding down its app last year.

"Today, the vast majority of people using Zelle to send money use it through their...