No Cash, No Checks, No Problem Peer-to-peer payment apps are one of the newest ways to send money. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents The Power of Compound Interest Learn how to harness the power of compound interest for your investments. Strategies For Managing Student Loan Debt Five strategies for managing your student debt. Historical Inflation This calculator shows how inflation over the years has impacted purchasing power.