Ecash App is a free and open source Fedimint wallet that puts financial
privacy first. Manage your ecash across multiple federations with support
for Lightning, on-chain, and ecash payments.

Features:

Discover and join Fedimint federations
Send and receive over Lightning Network
Claim a Lightning Address for easy payments
Nostr Wallet Connect (NWC) for app integrations
Nostr-based contacts
Federation monitoring and gateway selection
Automated backup and recovery via Nostr