21W — Simple self-custodial Bitcoin wallet

Simple self-custodial Bitcoin wallet. Powered by Ark.

Fund your wallet with Lightning and spend sats via Ark.

Download

Try 21W on your device.

Source on GitHub — audit the non-custodial code.

iOS (TestFlight) Android (APK)

Preview

Tap any screenshot to enlarge and browse.

21W home screen with balance, receive and send actions, and recent activity — Home — balance & activity

21W activity screen listing sent, funded, and received transactions — Activity — transaction history

21W fund screen to add sats via Lightning invoice — Fund — Lightning invoice

21W receive screen with Ark address and QR code — Receive — Ark address

21W send screen to enter recipient address and amount in sats — Send — address & amount

21W withdraw screen to send sats to a Bitcoin on-chain address — Withdraw — on-chain

21W withdraw confirmation showing amount withdrawn in sats — Withdraw confirmation

21W address book with saved contacts — Contacts — address book

21W contact detail screen with send and delete actions — Contact detail

21W settings screen with language, notifications, and security options — Settings — security & notifications