As simple as Apple Pay.
Scan a code, tap to pay, or pick a favourite. You see the amount, the route and the fee before you confirm.
Cash on your phone.
As simple as Apple Pay.
As fast as a text message.
As open as email.
Digital cash you actually hold, secured by bitcoin and settled over Lightning in seconds. No bank, no account, and nobody in the middle of your money.
Free to download. No sign-up, no tracking.
Money should work like everything else on your phone.
As fast as a text message.
Payments settle over Lightning in seconds. No three-day pending, and no wondering if it landed.
As open as email.
Get your own address, like you@dualitywallet.money. Anyone, on any wallet, can pay you.
Two pockets.
One wallet.
Hold Bitcoin and spend Digital Cash, side by side in one app. Move value between them in a tap, whenever you like.
- Bitcoin
- To hold. Real bitcoin, secured by keys only you have.
- Digital Cash
- To spend. A steady US-dollar balance, in beta. Not a bank account, deposit or insured product.
Top up from a card, or from another chain.
Add money with a card.
Top up in a few taps. Buy with a card through Coinbase and it lands in your Digital Cash balance, usually within minutes. Duality shows the fees and the limits before you buy, and checks your country first, so you’re never sent to a payment screen that won’t take you. Card deposits are available in 45 countries.
Top up from another chain.
Already holding stablecoins somewhere else? Send USDC or USDT from Tron, Ethereum, Solana, Base, BNB Chain, Polygon and more, and it arrives as Digital Cash. Pick the network, enter the amount, show the code.
Your face is your key.
Your phrase is your backup.
Other wallets
“Write these 12 words on paper before you can do anything.”
Duality
“Use your fingerprint every day. Keep your 12 words for the day you need them.”
Create and unlock your wallet with your fingerprint or face, the same passkey you already use everywhere else. There is no password to remember, and your passkey syncs through your Google or Apple account.
Your 12-word recovery phrase is the backup that always works. It restores your wallet on any device, whatever happens to your phone or your account. Save it from Settings → Backups and keep it somewhere safe.
Nobody in the middle.
- No account
- No email, no password, no sign-up form. There is nothing to breach, and nobody who can freeze your balance.
- Keys stay on your phone
- Your keys are created on your device and never leave it. Only you can authorise a payment.
- No tracking
- No analytics or advertising code in the app, and no trackers, cookies or third-party scripts on this site.
Found a vulnerability? Email security@dualitywallet.com. Our disclosure policy is in security.txt.
Questions, answered.
Is Duality custodial?
No. Duality is self-custodial. Your keys are generated and stored on your device, and only you can authorise a payment. Duality cannot spend, freeze, or recover your funds on your behalf.
What are the two pockets?
Bitcoin is your pocket to hold, in real bitcoin. Digital Cash is a steady, US-dollar-denominated pocket to spend. Both are self-custodial, and you can move value between them in the app.
What is Spark?
Spark is a bitcoin layer 2 that enables fast, low-cost payments while keeping value denominated in bitcoin. Duality connects to Spark through the Breez SDK, so payments settle in seconds rather than waiting for base-chain confirmations.
Do I have to write down a seed phrase?
Not to get started: day to day, you sign in with a passkey, your fingerprint or face. But do save your 12-word recovery phrase from Settings → Backups. It is the backup that always works, even if your passkey never synced or you lose access to your Google or Apple account.
What happens if I lose my phone?
Restore your wallet on the new phone with your passkey or your recovery phrase. Your passkey works once it has synced to your Google or Apple account. Your recovery phrase works on any device, whatever happened to the old phone or your account. Because Duality never holds your keys, no one else can recover your funds for you, so keep the phrase somewhere safe.
Is Digital Cash a bank account?
No. It is an optional way to hold US-dollar-denominated value using token and conversion features provided through Spark. It stays self-custodial. It is not a bank account, a deposit, or an insured product, and its value or availability can change.
How do I get a Lightning address?
Claim a username inside the app to receive at you@dualitywallet.money. Anyone using any Lightning wallet can then pay you at that address.
Does Duality track me?
No. There are no analytics or advertising SDKs in the app, and no trackers, cookies, or third-party scripts on this website. The privacy policy describes the limited operational data used by optional features.
Where can I download Duality?
Duality is available free on the App Store and Google Play, for iPhone and Android.
Money that lives on the internet.
Free on iPhone and Android.