Stop copying six-digit codes. FactorCat is a modern authenticator that replaces the old routine — unlock phone, find token, squint at timer, type digits, hope you were fast enough — with a single tap.

HOW IT WORKS
Install the FactorCat browser extension on your computer. When you reach a login page that asks for a verification code, FactorCat sends a push notification to your phone. Tap approve, confirm with your fingerprint, and the code fills in automatically on your computer. That's it.

YOUR SECRETS STAY ON YOUR DEVICE
FactorCat stores your TOTP secrets on your phone, encrypted and protected by biometrics. The browser extension never sees your secrets — it only receives a computed code after you explicitly approve the request. FactorCat deliberately does not store passwords. Keeping MFA and passwords separate means there is no single point of failure for your accounts.

TWO VAULT TYPES
• Cloud Vault — cloud-managed keys for easy recovery. Great for getting started with MFA or for low-risk accounts. FactorCat can generate codes on your behalf when your phone is offline.
• Locked Vault — zero-trust encryption using a model trusted by leading security products. You hold the keys. FactorCat cannot read your secrets. Backup via encrypted cloud blobs recoverable only with your emergency kit.

GET STARTED IN 2 MINUTES
1. Download FactorCat
2. Add your first token — scan a QR code or let the browser extension capture it from the setup page
3. Pair your phone with the extension using one QR scan
4. Your next login fills itself in

WORKS STANDALONE TOO
Use FactorCat as a standard authenticator with no account and no extension required. View your codes on-device like any other authenticator app. When you're ready for the auto-fill experience, pair with the extension anytime.

Free to use. No ads. No tracking.