Coconut Vault: Bitcoin Signer — Secure Your Assets with Air-Gapped Self-Custody

Name: Coconut Vault: Bitcoin Signer
Availability: InStock
Rating: 5 (1 reviews)

Transform your iPhone into a professional-grade hardware wallet. Sign PSBTs fully offline via QR codes and protect your private keys within the Secure Enclave for ultimate peace of mind.

Publisher

Nonce Lab Inc.

Security in Sight

Discover the interface used by 700 users.

iPhone screen displaying the Coconut Vault app interface with options for offline bitcoin signing and secure vault management

Three simple steps to set up Coconut Vault Bitcoin signer including offline mode activation

Interface of Coconut Vault app showing a list of multiple created Bitcoin wallets for offline management

Coconut Vault app screen showing options for secure storage mode and signing only mode

Coconut Vault interface showing the automatic lock screen that activates when an internet connection is detected to ensure air-gapped Bitcoin security

Coconut Vault security screen showing a warning that the vault will be reset after multiple failed unlock attempts

Two smartphones displaying the Coconut Vault Bitcoin signer app interface with light and dark mode themes

Fortify Your Financial Sovereignty

The tools that make this app stand out, trusted by 700 users.

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Hardware-Isolated Security

Your keys are stored within the iPhone’s Secure Enclave (HSM), physically isolated from the internet and protected against sophisticated software attacks.

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Pure Air-Gapped Workflows

Sign PSBT transactions using QR codes only. By eliminating all digital connections, you ensure your private keys remain 100% offline at all times.

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Anti-Network Fail-Safe

Engineered for the paranoid: the app automatically locks and clears sensitive memory if it detects any Wi-Fi or cellular signal, preventing data leakage.

Loved by users worldwide

Trusted by 700 people who love this app.

"I have been looking for a way to leverage the iPhone's Secure Enclave for my cold storage without buying more proprietary hardware. Coconut Vault is the perfect solution. The QR-based signing is seamless, and the auto-lock feature provides absolute peace of mind for my air-gapped setup."

Marcus Thorne, Cybersecurity Engineer

"Finally, a signer that respects the air-gap principle properly. I use it with Sparrow and Nunchuk, and the PSBT workflow is incredibly smooth. It turned my spare iPhone into a top-tier hardware wallet with zero network exposure. Essential for anyone serious about self-custody."

Sarah Jenkins, Technical Consultant

About the app

Everything you need to know about Coconut Vault: Bitcoin Signer.

Description

Coconut Vault — Offline Bitcoin Signer for Complete Self-Custody Coconut Vault keeps your private keys secure in a fully air-gapped environment. Sign PSBTs (Partially Signed Bitcoin Transactions) without any internet connection. Designed for those who take Bitcoin security seriously, Coconut Vault uses hardware-level protection (HSM / Secure Enclave) to isolate your private keys from the OS and other apps. Key Features • QR-based PSBT signing (fully offline) • Hardware security module protection for private keys • Compatible with Coconut, Sparrow, BlueWallet, and Nunchuk watch-only wallets • Auto lock & memory zeroize when network is detected • Selectable operation modes (Signing-only / Secure storage) Your keys. Your vault. Your Bitcoin — Coconut Vault.

Latest Version

2.0.1

Size

48.1 MB

First Released

Oct 26, 2025

Secure Your Bitcoin Wealth with Coconut Vault

Ready to eliminate online risks? Download the most advanced air-gapped signer and take absolute control of your private keys today.

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