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QUBRA PRIVACYInstall mobile
Meet QUBRA PRIVACYYour wallet. Your business.Keep your assets private, wherever you use QUBRA PRIVACY.Explore all products→

Apps

Extension→For Chrome, Brave, and Edge.Mobile→For Android and iOS.Portal→A full-page workspace, in the extension.

Tools

UsernamesA name people can find and pay. (opens in a new tab)Network Guard→Connect your VPN app to QUBRA PRIVACY.RailscanExplore public Railgun activity. (opens in a new tab)
All downloads→Release notes→
Learn with QUBRA PRIVACYA guide for every next step.From your first shield to connecting a dApp.Explore Learn→
Getting startedSet up your wallet and make your first transfer. (opens in a new tab)TutorialsStart with shielding and unshielding your assets. (opens in a new tab)Names & profilesMake your wallet easier to find and pay. (opens in a new tab)Privacy & securityUnderstand your keys, data, and privacy controls. (opens in a new tab)
All documentation→Sources & verification→
Build with QUBRA PRIVACYBring your app to the wallet.Connect accounts, request permissions, and integrate QUBRA PRIVACY.Read the integration guide
DApp integrationConnect your application to QUBRA PRIVACY. (opens in a new tab)
SDKComing soonTools for building with QUBRA PRIVACY.
PrimitivesComing soonThe building blocks behind QUBRA PRIVACY.
Stay connectedA little help goes a long way.Ask a question, share an idea, or meet the community.Join the conversation
Contact→Get in touch with the QUBRA PRIVACY team.SupportFind help in our Discord community. (opens in a new tab)Releases→What changed, version by version.Privacy→How we handle your information.Terms of service→The terms for using QUBRA PRIVACY.
Railscan (opens in a new tab)
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English中文 (CN)한국어 (KR)Русский (RU)日本語 (JP)EspañolFrançais
Get QUBRA PRIVACY
Download QUBRA PRIVACY Mobile
The QUBRA PRIVACY wallet

Practical Privacy,Wherever you need it.

Pay, trade and manage your money with privacy tools built in and keys you control.Your money, with you. Send, receive and pay from your phone.

See what you can do
QUBRA PRIVACY Mobile
Privatized through QUBRA PRIVACYPrivatized
$19.6M+$19.6M+$19.6M+Cumulative private volume
Transactions privately broadcastedPrivately broadcasted
3.5K+3.5K+3.5K+by QUBRA PRIVACY broadcasters
Download QUBRA PRIVACY Mobile

Your funds. Your keys.

This is the real extension. Try it.

QUBRA PRIVACY Extension

Interactive demo
Sample wallet · No real funds

A little space. A lot you can do.

Your wallet.
Right here.

This is how QUBRA PRIVACY lives in your browser. A wallet within reach, while the rest of your day stays open.

  1. 01
    Make it private.

    Switch between public and private balances.

  2. 02
    Try a payment.

    Choose Send and walk through a sample transfer.

Everything here is sample data. Explore freely.

The QUBRA PRIVACY extension wallet, shown in EnglishThe QUBRA PRIVACY extension wallet, shown in English

Sample balances. Simulated transactions. No real funds.

The QUBRA PRIVACY extension wallet, shown in RussianThe QUBRA PRIVACY extension wallet, shown in RussianРусскийThe QUBRA PRIVACY extension wallet, shown in ChineseThe QUBRA PRIVACY extension wallet, shown in Chinese中文

Your wallet, in your language

The QUBRA PRIVACY browser extension and mobile app speak seven languages. Pick one below and the whole site switches with it.

English中文Español日本語Français한국어Русский

Also in the mobile app

Use QUBRA PRIVACY your way

Your Money,
Your Business

01MobileAndroid + iOS

Pay on the go.

Send, receive, and pay people from your phone. Keep your wallet close, wherever your day takes you.

Send to QUBRA PRIVACY profile
Get the mobile app
02Browser extensionChrome / Brave / Edge

Connect to your apps.

Bring your wallet to other dApps. Connect an account, review requests, and approve what happens next.

Privacy first
Explore the extension
03QUBRA PRIVACY PortalIncluded with the extension

Bring it all together.

Open your extension wallet in a full-page workspace for balances, trades, and positions.

All in one
See how Portal works

Your username. Your money.

Pay and get paid.
Privately.

Find friends by @username. Share your profile to get paid. A simple name for the way you move money.

01

Find them. Pay them.

Look up their username. Check their profile and confirm in your wallet.

02

Share yours to get paid.

Send your profile or show your QR. Public and private receive addresses, in one place.

Explore QUBRA PRIVACY Buzz About usernames ↗
A NAME. A FACE. A WAY TO PAY.[ QUBRA PRIVACY BUZZ ]
YOUR QUBRA PRIVACY PROFILEanon.buzz
@youPay and get paid
Preview
GET PAID

It starts with your @.

@you

One username. A simple way to pay you.

Open QUBRA PRIVACY Buzz (opens in a new tab)

Sample profile · QR opens QUBRA PRIVACY Buzz

Your profile is public. A private address receives shielded funds.

The Private Layer for Your Wallet

Familiar actions.
A different level of privacy.

Move and trade on-chain without exposing your full wallet activity. Privacy tools, built into the way you use your wallet.

*(=][\$^$#$#$+123!##$123!##$
01

Private transfers

Send from a shielded balance to a private address, without publishing the amount or recipient.

?><#@$*(=][\$^?><#@$*(=][\$^==//==$#$#$+$#$#$+123$#123$#$#$#$+$#$#$+123$#123$#$#$#$+$#$#$+123$#123$#$#$#$+$#$#$+123$#123$#$#$#$+$#$#$+123$#123$#$#$#$+$#$#$+123$#123$#$#$#$+$#$#$+123$#123$#$#$#$+$#$#$+123$#123$#
02

Private swaps

Move between supported tokens from your private balance, with the swap flow built into your wallet.

$#$+$/#$#$+public or private
03

Shielded balances

Move supported assets into RAILGUN’s privacy system. Keep your public and private balances in one place.

-------- . . . . . . . . . ------------------ ++++++++. . . . . . . . . . . . . . . .------------------- . . . . . . . . . . . . . ++++++++++++ --- . . . . . . . ++++++++. . . . . . . . . . ++++++++. . . . . . . . . . . . . . . ./ / / / / / / / ---------------\ \ \ \ \ \ \ \ \ \ . . . . . . . . . . . . . - - - - - - - - - -- - - --- . . . . . . . . . -------- . . . . . . . . . ------------------ ++++++++. . . . . . . . . . . . . . . .------------------- . . . . . . . . . . . . . ++++++++++++ --- . . . . . . . ++++++++. . . . . . . . . . ++++++++. . . . . . . . . . . . . . . ./ / / / / / / / ---------------\ \ \ \ \ \ \ \ \ \ . . . . . . . . . . . . . - - - - - - - - - -- - - --- . . . . . . . . . -------- . . . . . . . . . ------------------ ++++++++. . . . . . . . . . . . . . . .------------------- . . . . . . . . . . . . . ++++++++++++ --- . . . . . . . / / / / / / / / / / / / - - - - - - - - - - - - - - - . . . . . . . . . . . . . . . . . . _ _ _ _ _ _ _ _ _ . . . . . . . . . . - - - - - - - - - - - - - - - - - - - \ \ \ \ \ \ \ \ \ \ \ \ \ / / / / / / / / / / / / - - - - - - - - - - - - - - - . . . . . . . . . . . . . . . . . . _ _ _ _ _ _ _ _ _ . . . . . . . . . . - - - - - - - - - - - - - - - - - - - \ \ \ \ \ \ \ \ \ \ \ \ \ *(=][\$123%^
04

Your keys, your control

Your wallet keys are encrypted on your device. You choose when to send, swap, shield, or unshield.

Private features use shielded funds on supported networks. Shielding and unshielding still create public blockchain transactions.

Pay. Trade.
Earn. Borrow.

Everyday payments are just the beginning. Send to people, swap tokens, explore yield and manage borrowing. QUBRA PRIVACY brings more of your onchain money into your hands, with different apps for how you use it.

Robinhood Chain

Pay

Money between people

Share your profile. Make receiving feel familiar.

4!@$356$#@412#!176w^12
QUBRA PRIVACY.BUZZ
Robinhood Chain

Borrow

Open up your options

Explore borrowing against supported assets. Review collateral, rebalancing and loan terms before you make a move.

WITH QUBRA PRIVACY
Robinhood Chain

Trade

Make your next move

Swap tokens on Robinhood Chain through Uniswap v3. Review the live quote, minimum received and network fee before you confirm.

QUBRA PRIVACY PORTAL
TRADING TOOLS
Robinhood Chain

Yield vaults

Put your assets to work

Deposit into Morpho vaults on Robinhood Chain or withdraw your assets. Review the vault, permissions and available liquidity.

24H
126,331.00+180.21
98.9812+10.56
500.21+5.23

Features and privacy depend on the app, network and action you choose. Borrowing terms depend on the underlying protocol.

Connect

Connect to any app. Scan and go.

Open the Connect tab, scan the app's QR code and you're in. Before you approve, you see the app, the networks it asks for and a trust badge, and you choose which account it sees, even a stealth account.

  1. Point your phone at the app's WalletConnect code. The camera stays off until you tap Scan QR code.

Connect is in QUBRA PRIVACY for Android today, with iOS next. Connections use WalletConnect.

Illustration of the QUBRA PRIVACY mobile Connect tab with a Scan QR code button, a Paste a connection link button and two connected apps, one Verified and one Unverified.
Illustration of an QUBRA PRIVACY mobile connection request for a Verified app, with a stealth account chosen, its networks, the app's permissions and Connect and Reject buttons.

Illustration

Security

Checks before you connect, sign and send.

  • reported-site.example
    On a public phishing list
    Connect

    Checked on your device

    01

    Phishing sites are blocked

    Before you connect, the extension checks the site against MetaMask's public phishing list, kept on your device. A listed site can't connect, and its requests are blocked.

  • Every step read
    You send
    0.0097 cbBTC
    You receive at least
    0.1724 PAXG
    Known router
    A step it can’t read

    0x5ae401dc000000000000000000000000e3b6a1f0000000000000000000000000 d2c4a97b00000000000000000000000000000000000000000000000000000000

    Raw call shown
    02

    Signing never guesses

    Transactions are read in plain terms: what you send, receive and approve. If QUBRA PRIVACY can't read every step, you see the raw call, never a best guess.

  • Sent to before
    0x4a7c1111 2222 3333e81d
    New recipientLooks alike
    0x4a7c9999 8888 7777e81d
    I’ve checked the full address
    03

    Lookalike addresses get caught

    QUBRA PRIVACY checks each recipient against your own history and contacts, on your device. A lookalike of an address you know is shown beside it, and you tick that you checked the full address before you send.

  • app.example-swap.xyzapp.example-lend.xyzStealth #1Stealth #2

    Both sites could link your activity

    04

    One site, one account

    Choose the account each site sees, even a new stealth account. QUBRA PRIVACY warns you when one account would let two sites link your activity.

These checks use known lists and your own history. A site that isn't on a list isn't proven safe.

Privacy, step by step

How QUBRA PRIVACY makes
your wallet private.

Explore the steps01 / 03
Read the shielding guide ↗
Public wallet → Shield assets
120,000210,591

Review the amount and network fee before you confirm

zk1241...1Afs12
7Yp31Km9Qa84xL....2F610x7F31a9Bc42D8e1F....A9210xA19F42cD8e73B2....C912Gk72Pq9mX31vBa....42F1

Review the amount and network fee before you confirm.

Shielded assets → Private balance

Only you control your wallet and its private balance

We keep it private

Only you control your wallet and its private balance.

$19,120
0x//A7@#9F:A9::\@!44##%%&*72!!
NX-94\@!%%::7210#^&*CRY//31@!
CRY//31@![ENC]7F@!3\92^^&*00X
Private balance → Private activity
210,591
210,591210,591
19,120

Choose when to keep assets private and when to unshield

Choose when to keep assets private and when to unshield.

What’s new & what’s next.

Latest release

QUBRA PRIVACY Extension 0.12.3Upcoming · Release notes

Get the iOS app

QUBRA PRIVACY for iOSDownload on the App Store

Coming soon

A new home on your desktop

A standalone QUBRA PRIVACY desktop wallet is on the way. Use QUBRA PRIVACY in your browser today.

Explore downloads

The technology behind QUBRA PRIVACY

Privacy, built in.
Simple to use.

Privacy takes more than one feature. QUBRA PRIVACY brings cryptographic proofs, transaction delivery, fee handling and account controls into the way you use your money.

01

Zero-knowledge proofs

Private balances, backed by cryptography.

RAILGUN proofs validate shielded transactions without publishing the private notes they spend.

Scope & limits

Shielding, unshielding and other public actions still leave public records.

How the proofs work ↗
02

Self-custody

Your keys stay in your hands.

Wallet keys are encrypted on your device. You control the keys that authorize your funds.

Scope & limits

Your recovery information and device security remain essential.

Understand the security model ↗
03

Stealth accounts

Separate accounts for your onchain activity.

Use managed accounts for supported app interactions and positions, alongside your main public and shielded balances.

Scope & limits

Some accounts persist for ongoing positions. Their activity is public onchain; funding patterns and reuse can still create links.

Explore app connections ↗
04

Paymasters

More ways to pay network fees.

On supported routes, the paymaster submits the transaction and settles its fee in a supported token you select.

Scope & limits

Fees and supported tokens depend on the network and transaction.

See how fees are handled ↗
05

Encrypted relays

Encrypt the submission before it reaches the relay.

OHTTP encrypts transaction submissions and status requests to the paymaster. The relay forwards them without reading their contents.

Scope & limits

Public quotes and token lookups are not encrypted by OHTTP. Separating your IP from request contents also requires independent, non-colluding operators that do not forward your IP. Timing and public chain activity remain observable.

Inspect the relay model ↗
06

Network Guard

Bring your existing VPN into the picture.

The optional Mac companion connects QUBRA PRIVACY in Chrome to your existing VPN app and reports its connection state.

Scope & limits

A VPN status check does not block requests or verify that browser traffic uses the tunnel.

Explore Network Guard ↗
Explore the guides and technical references →

A little more clarity

Good questions. Clear answers.

Read the docs
QUBRA PRIVACY

Privacy should make sense.

Start here, or go a little deeper in our documentation.Explore privacy
01What is QUBRA PRIVACY?

QUBRA PRIVACY gives you self-custody tools for your money on mobile and in your browser. The browser extension includes QUBRA PRIVACY Portal, a full-page workspace. Send and receive, connect to apps, or manage your onchain balances and positions, with public and private options where supported.

Get started with QUBRA PRIVACY
02How do I open QUBRA PRIVACY Portal?

Portal is included with the browser extension. Open QUBRA PRIVACY, then select Open Wallet Portal above your balance to open your full-page workspace for balances, swaps and positions.

See how Portal works
03What happens when I shield assets?

Shielding moves supported assets from your public address into a Railgun private balance. The deposit is visible onchain, while your shielded balance is not displayed like the balance of a public address.

Understand shielding
04Is every transaction private?

Privacy depends on the action you choose. Public transactions remain public. Shielding, unshielding, and external swap execution have public aspects, so review the transaction details before you confirm.

Explore how privacy works
05Who controls my wallet and keys?

You do. QUBRA PRIVACY encrypts your keys locally. Keep your recovery information somewhere safe: it is what lets you restore access to your wallet on another device.

Read the setup guide
06Where can I use QUBRA PRIVACY?

QUBRA PRIVACY is available for Chrome, Brave, and Edge, plus Android through Google Play or a direct download. The iOS app is available on the App Store. The download page has current versions and installation instructions.

See download options
07Do I need QUBRA PRIVACY Network Guard?

Network Guard is an optional companion for the Chrome extension on macOS. It connects to your existing VPN app and reports its connection state. It does not block requests or verify that your browser traffic uses the VPN tunnel.

Learn about Network Guard
08Why does my private balance need to sync?

QUBRA PRIVACY scans encrypted onchain activity to discover the assets and transactions that belong to your private wallet. A new or restored wallet may need time to catch up before its private balance is ready.

Understand wallet syncing
09What can I do with an QUBRA PRIVACY username?

Give your wallet a name people can remember. Your QUBRA PRIVACY profile can share a picture, handle, and receive links. Profiles are public, so choose the information you want to share.

Explore QUBRA PRIVACY usernames
10How do I connect QUBRA PRIVACY to an app?

On your phone, open the Connect tab and scan the app's QR code, paste its link, or open the link on the phone. In the browser extension, click Connect on the site and review the request. Either way, you choose which account the app sees.

11How does QUBRA PRIVACY check sites?

The browser extension checks each site against MetaMask's public phishing list, kept on your device and renewed every 20 minutes. Downloading the list names no site or account, and a listed site can't connect. On mobile, each request shows a trust badge. A site that isn't on a list isn't proven safe, so check the address too.

12Which languages does QUBRA PRIVACY speak?

English, Chinese, Korean, Russian, Japanese, Spanish and French, in the browser extension and the mobile app. QUBRA PRIVACY follows your browser or phone language, or you can choose one in Settings.

WITH QUBRA PRIVACY

Stay private.
Stay in control.

Your wallet, on your terms.

Download QUBRA PRIVACY Browser · Android · iOS
QUBRA PRIVACY
[2026]
PROJECT

The future is private.

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