Yes. Fi users have access to both fund transfer facilities. 

At a glance: Bounce Charges: ₹ 300 per transaction for Savings accounts (₹150 for ECS/NACH transaction return for the first time). Our partner bank has a detailed breakdown of the fees. Please turn to page 6 of this document.

FYI: National Automated Clearing House (NACH) & Electronic Clearing Service (ECS) help complete high-volume, online interbank transfers that are fixed or periodic! Think regular EMIs, loan repayments, and so on.