Bitcoin, instantly.

Send Bitcoin by phone number.

Bitzum is a non-custodial Bitcoin wallet that lets you pay anyone using just their phone contact. Instant off-chain settlement — no fees, no waiting, no addresses to copy.

Bitzum wallet home screen showing balance and recent transactions
Bitzum send screen showing a contact and amount to send

A wallet you can hand to anyone.

Familiar UX. Real Bitcoin. None of the friction.

Pay by phone number

Pick a contact, enter an amount, send. Bitzum maps phone numbers to Bitcoin under the hood so you never touch a long address.

Non-custodial

Your 24-word seed lives on your device, in the secure enclave. We never see your keys and we can't move your money.

Instant settlement

Bitzum-to-Bitzum payments settle off-chain in under a second — no on-chain wait, no on-chain fee.

Real Bitcoin in, real Bitcoin out

Top up from any wallet to your on-chain Taproot address. Send and receive over Lightning too, all from one balance.

Pay people not on Bitzum yet

Send to any phone number — recipients get an SMS and the funds wait for them. If they don't claim, you get your sats back.

BTC and your local currency

See balances and amounts in sats, BTC, or your home fiat — switch with a tap. Spot rates refresh live.

From install to first payment in under a minute.

No KYC, no email, no waiting list. Just a phone number to verify so your friends can find you.

Verify your number

A one-time SMS code links your phone to a fresh Bitcoin wallet generated on-device.

Top up

Scan your Taproot deposit address from any exchange or wallet. Your balance updates as soon as the deposit confirms.

Send to a contact

Pick anyone in your address book, enter an amount in sats or fiat, hit send. That's it.

Get Bitzum.

Available on iOS now. Android beta coming soon.