Keycard Pal
mmlado Finance Contains ads
Sign Ethereum and Bitcoin by QR code with a Keycard NFC smart card
- Downloads
- 5+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Sep 24
- 2026 · v1.12.0
Screenshots
About Keycard Pal
Keycard Pal is a hardware wallet companion app. It works with a Keycard NFC smart card to sign Ethereum and Bitcoin transactions, and your private keys never leave the card.
Requires a Keycard hardware smart card (keycard.tech). The app talks to the card over NFC: no USB, no Bluetooth.
Your wallet and Keycard Pal talk through animated QR codes. The wallet shows a request, you review it in Keycard Pal, tap your card, and show the signature back. No network connection is needed for any of it.
Features:
- Sign Ethereum transactions (legacy, EIP-1559, EIP-2930)
- Sign EIP-712 typed data with decoded preview before approval
- Sign personal messages (EIP-191 / SIWE)
- Sign Bitcoin transactions via PSBT
- Sign Bitcoin messages (BIP-322)
- Export wallet keys to MetaMask, Rabby, Ledger Live, Sparrow, BlueWallet, and Bitget via UR QR codes
- Generate a key pair on the card, or import a recovery phrase (BIP-39) or SLIP-39 shares
- Genuine Keycard check
- No telemetry, no analytics, no account
Keycard Pal comes in two builds:
- Keycard Pal Offline (com.keycardpal.offline) has no internet permission. It cannot make a network connection.
- Keycard Pal (com.keycardpal) has the internet permission for optional features: WalletConnect, ENS names, transaction simulation with Tenderly, and token images. Each one is off until you turn it on in Settings. WalletConnect needs your own Reown Project ID and simulation needs your own Tenderly API key.
Keycard Pal is free and open-source software.
Advertisement: the Buy a Keycard links in this app are affiliate links. The developer earns a commission on purchases made through them. No app feature depends on buying through them, and every feature of the app is free.
Requires a Keycard hardware smart card (keycard.tech). The app talks to the card over NFC: no USB, no Bluetooth.
Your wallet and Keycard Pal talk through animated QR codes. The wallet shows a request, you review it in Keycard Pal, tap your card, and show the signature back. No network connection is needed for any of it.
Features:
- Sign Ethereum transactions (legacy, EIP-1559, EIP-2930)
- Sign EIP-712 typed data with decoded preview before approval
- Sign personal messages (EIP-191 / SIWE)
- Sign Bitcoin transactions via PSBT
- Sign Bitcoin messages (BIP-322)
- Export wallet keys to MetaMask, Rabby, Ledger Live, Sparrow, BlueWallet, and Bitget via UR QR codes
- Generate a key pair on the card, or import a recovery phrase (BIP-39) or SLIP-39 shares
- Genuine Keycard check
- No telemetry, no analytics, no account
Keycard Pal comes in two builds:
- Keycard Pal Offline (com.keycardpal.offline) has no internet permission. It cannot make a network connection.
- Keycard Pal (com.keycardpal) has the internet permission for optional features: WalletConnect, ENS names, transaction simulation with Tenderly, and token images. Each one is off until you turn it on in Settings. WalletConnect needs your own Reown Project ID and simulation needs your own Tenderly API key.
Keycard Pal is free and open-source software.
Advertisement: the Buy a Keycard links in this app are affiliate links. The developer earns a commission on purchases made through them. No app feature depends on buying through them, and every feature of the app is free.
What’s new
Version 1.12.0 · Updated September 24, 2026
About: the donation section is now titled Donations and says that donations are voluntary and that nothing in the app is unlocked, changed or promised in return. Security: updated third-party libraries with reported vulnerabilities. Smaller app: a token logo index the online build never read is no longer bundled.
Alternatives to Keycard Pal
Looking for apps like Keycard Pal? Here are 6 similar Android apps on Google Play. All of them are free to download.
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| App | Rating | Price | Installs | Last updated |
|---|---|---|---|---|
| Keycard Pal | – | Free | 5+ | Sep 24, 2026 |
| AM Capitals Advisory | – | Free | 0+ | Sep 19, 2026 |
| CariTakip | – | Free | 1+ | Aug 26, 2026 |
| ወጪ ገቢ መቆጣጠሪያ - Expense Tracker | – | Free | 500+ | May 19, 2026 |
| Vestream - Token Unlocks | – | Free | 10+ | Aug 31, 2026 |
| BaldwinCountyFCU | – | Free | 100+ | Sep 22, 2026 |
| ContaIglesia | – | Free | 50+ | Sep 14, 2026 |
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