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MetroVaultBold Bitcoin Wallet

Best for: Bitcoin holders who want cold storage without buying a hardware wallet

Best for: Bitcoin holders who want multi-device self-custody without a seed phrase or hardware wallet

Free

Free and open source under the GPL-3.0 licence.

 Free

Free and open source under the Apache-2.0 licence.

Android macOS, Android, iOS, Browser extension
  • Keys stay on an offline device
  • PSBT signing over QR codes
All 4 strengths
  • Keys stay on an offline device
  • PSBT signing over QR codes
  • Multi-signature and Silent Payments support
  • Reproducible builds on F-Droid
  • No seed phrase or hardware wallet needed
  • 2-of-3 approval means one compromised device cannot spend funds
All 4 strengths
  • No seed phrase or hardware wallet needed
  • 2-of-3 approval means one compromised device cannot spend funds
  • PSBT import and output descriptors for use with other wallets
  • Available on Android, iOS, Mac and Chrome
  • Needs a separate phone kept offline for real air-gapping
  • Requires a watch-only wallet on another device
All 3 limitations
  • Needs a separate phone kept offline for real air-gapping
  • Requires a watch-only wallet on another device
  • Small project with a single main developer
  • Needs at least two devices to approve transactions
  • Young project with a small user base
Downloadable app Downloadable app, Browser extension
Open source Open source
License: GPL-3.0-or-later License: Apache-2.0
No account needed Not stated if an account is needed
Offline features available Offline features available
Sources

Catalog checked October 2, 2026
Sources

Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.