Skip to content
Coinomi

K21 wallet.

Hold, send and receive K21 in a wallet where you hold the keys.

Download Coinomi
Get it oniPhoneAndroidMacWindowsLinux

What you can do with K21 in Coinomi

Hold, send and receive K21 (K21) in Coinomi, the self-custody wallet since 2014, on Ethereum. Your keys stay on your device, and there is no Coinomi account to create.

  • Hold it yourselfYour K21 keys are created and kept on your device. One recovery phrase restores your whole wallet, and there is no Coinomi account to create.
  • Send and receiveCoinomi adds no fee to send or receive K21. The network you send on charges its own fee, paid in that network's coin, and Coinomi warns you about an unusual fee before you confirm.
  • SwapCompare quotes from several providers and swap K21 for other coins without leaving the wallet, wherever a provider supports the pair.
  • Buy and sellBuy and sell crypto by card or bank transfer through BTC Direct, Simplex and Onramper, where available. Providers set their own fees and checks.

Swap K21

Trade K21 for other coins, or other coins for K21, straight from the wallet where you hold the keys.

  • Swap K21

    Compare quotes from several providers and trade K21 for other assets.

    Swap K21

Popular swaps

Providers set their own fees and checks, shown before you confirm.

Where K21 lives

In Coinomi, K21 is supported on:

The same token can exist on several networks. Send and receive on the same network, and check it before you send.

K21 wallet questions

Is Coinomi a self-custody K21 wallet?

Yes. Coinomi creates and stores your K21 keys on your device, and there is no Coinomi account to create. Only you can move your K21. That also means Coinomi can't recover a lost recovery phrase for you.

What does it cost to hold or send K21?

Coinomi is free to download, and it adds no fee to send or receive K21. The network you send on charges its own fee, paid in that network's coin. Swap and buy providers set their own fees.

How do I buy or swap K21?

Open Coinomi and choose swap to trade another coin for K21, wherever a provider supports the pair. You can also buy crypto by card or bank transfer where available. Providers set their own fees and checks.

Which devices does the K21 wallet work on?

iPhone and iPad, Android, Macs with Apple silicon, Windows and Linux. The same recovery phrase opens your wallet on each of them.

How do I restore my K21 wallet?

Install Coinomi, choose to restore a wallet, and enter your recovery phrase. One phrase restores every coin in the wallet, and Coinomi can scan for the coins and accounts you used before. Keep the phrase offline and private.

Can I swap K21 for another coin?

Yes, wherever a provider supports the pair. Open Coinomi, choose swap, and compare quotes from several providers to trade K21 for another coin. Providers set their own fees and checks, shown before you confirm.