CWS - Cold Wallet Simulator

CWS turns your iPhone into a Bluetooth hardware wallet for developer testing. Advertise as a Ledger, Trezor, or OneKey device so desktop wallets can connect over BLE. Signing always waits for you to slide to confirm on the phone. CWS never auto-signs.

This is a lab tool. It is not a consumer wallet, not a bank, and not an official Ledger, Trezor, or OneKey product. Those names belong to their owners. CWS is an independent simulator from YSK Limited.

What you can do
• Advertise over Bluetooth as a hardware wallet
• Hold BIP39 and SLIP-39 seeds on the device
• Generate or import a seed, then show recovery words or shares
• Confirm or reject host requests with a slide control
• Read host APDU traffic in the console
• Unlock with Face ID or the device passcode
• Wipe all local data from Settings

How it works
Seeds stay on the iPhone. The app is BLE-only: it does not browse the web or send your seed anywhere. Hosts such as Ledger Live talk to CWS the same way they talk to a real device. Unsupported commands return an honest error. They are not faked as success.

Requirements
A physical iPhone. Bluetooth advertising does not work in the Simulator. Keep the app in the foreground while advertising.

Privacy
Face ID, seeds, and logs stay on this device. See Settings for the in-app privacy policy, or https://ysk.hk/privacy-policy

Powered by YSK Limited
https://ysk.hk