
Your digital dollars, fully in your hands.
Send, receive and swap USDC and USDT on Arbitrum One.

Digital dollars, without the crypto chores.
- Network
- Arbitrum One
- Tokens
- USDC and USDT
- Network fee
- Paid in the token you send
- ETH needed
- None
- Wallets
- As many as you need, one PIN
- Your keys
- On your phone only
Three things, done carefully.


Send, after a real review.
Before you confirm, see the recipient, the network, the maximum fee and the time. Transfers usually settle in about five seconds.


Receive with a QR code.
Share a QR code or copy your address, shown in groups of four so it’s easy to compare.


Swap USDC and USDT.
Routed through LI.FI. See the rate and the minimum you’ll receive before you swap.

Look-alike addresses, caught.
Scammers send tiny amounts from addresses that look like ones you’ve used, hoping you’ll copy the wrong one. Kryn compares every new address with your history, warns you, and asks you to check every character before you continue.
Your keys never leave your phone.
Kryn is self-custody: only you can move your funds.
Kept on your phone
Encrypted with your PIN and the phone’s secure hardware.
PIN, Face ID or fingerprint
Wrong PINs pause new attempts. It locks after a minute away.
Swaps checked before signing
Tokens must return to your address, at least the minimum shown.
Private screens stay private
Hidden in screen recordings and in the app switcher.
No accounts
No email, phone number or ID. Your wallet signs you in.


Made for everyday dollars.

Getting paid in digital dollars.
Share your address or QR code and receive USDC or USDT on Arbitrum One.

Sending money to family.
Review the recipient, the fee and the time before you confirm.

Keeping savings in dollars.
Hold USDC and USDT on your phone, with keys only you control.
Fees you can read.
- 0 ETHto get started
- Network fees come out of the token you send, and you pay the actual fee, usually under the maximum shown.
- $0to use the app
- No subscription, no sign-up and no minimum balance.

