The official non-custodial, cross-platform client for the Mostro peer-to-peer exchange network.

Mostro App lets anyone buy or sell Bitcoin for local fiat currency over the Lightning Network — without accounts, without KYC, and without trusting a third party. Built with Flutter and a Rust core, it runs on Android, iOS, Web, macOS, Windows, and Linux from a single codebase.

Key Features:

Non-custodial: Your keys stay on your device — no exchange ever holds your funds
Privacy-first: End-to-end encrypted over Nostr — NIP-44 for messages with the Mostro daemon and for peer-to-peer chat
Lightning-native: All Bitcoin settlements happen via Lightning invoices, with Nostr Wallet Connect (NWC) support for automated invoicing
Hierarchical Key Management: BIP-32 / BIP-39 key derivation with a unique key per trade
Censorship-resistant: Built on Nostr — no central server or domain to block
Multi-Language: English, Spanish, Italian, French, German, Dutch, and Brazilian Portuguese
Open source: AGPLv3 licensed and fully auditable