Cold Storage,
Now on Your Desktop
The Arculus Self-Custody Desktop App brings the security of the Arculus Key™ Card to Windows and macOS. Companion or standalone. Powered by .NET 10.
Your Keys. Your Crypto.
Built for serious self-custody
Every tool you need to manage digital assets — securely, from your desktop.
Companion or Standalone
Pair with your Arculus Key™ Card or run fully standalone — your choice, your control.
Secure Import / Export
Import and export key phrases or encrypted JSON wallets with end-to-end protection.
Desktop Power
No NFC required. Full keyboard, mouse, and large-screen workflows for power users.
.NET 10 Performance
Built on the latest .NET 10 framework for blazing-fast, native performance and security.
WalletConnect & DeFi
Connect to thousands of dApps and DeFi protocols with one secure click.
Full Self-Custody
Your keys never leave your device. Bank-grade encryption protects every transaction.
Zero Cloud Storage
Everything stays local. No accounts, no servers, no compromises.
Lightning Workflows
Sign multiple transactions, batch transfers, and manage portfolios in seconds.
Tired of NFC issues and mobile-only limits?
Phones drop signals. Small screens make mistakes easy. The Arculus Desktop App gives you the speed of a native interface with the same uncompromising security the Arculus Card is known for.
- No more failed NFC taps in the middle of a transaction
- Read every address character on a real screen
- Manage multiple wallets and chains at once
- Sign and verify offline when you need to
Up and running in minutes
Download & Install
Get the desktop app for Windows or macOS — verified and signed.
Pair or Import
Tap your Arculus Card to pair, or securely import your existing wallet.
Manage Securely
Send, receive, swap and connect to dApps — all from your desktop.
Security you can verify
Every release is code-signed and published with SHA-256 checksums. Your private keys are stored in the Arculus secure element or encrypted locally — never on a cloud server.
Loved by self-custody pros
"Finally — managing my cold storage without fighting NFC on my phone. The desktop app is butter-smooth."
"Importing my JSON wallet was painless. It feels exactly like the main Arculus experience, but supercharged."
"The fact that my keys never leave the machine — and I can verify the build — is exactly what self-custody should be."
Download the Arculus Desktop App
Free. Self-custodial. Works with or without the Arculus Card. Requires .NET 10 runtime (bundled in installer).
Always verify checksums before installing. See support.arculus.co for verification guide.