AirWallet The air-gapped wallet Download

Your spare phone is now a cold wallet. And you can actually use it, without it ever going online.

Put AirWallet on any spare phone or laptop, switch every radio off, and it signs by camera. No cable, no Bluetooth, no device in the mail: your keys live on a device that never goes online againHow does it work?Your everyday computer or phone prepares the payment and shows it as a QR code. The offline device scans it, signs, and answers with a code of its own. Click to see it step by step..

Free. One app does both jobs: when you first open it, pick Everyday wallet or Offline signer, the device that keeps your keys and never connects.

Hardened offline builds

AirWallet Offline is the same app, built so it can never connect. It has no online mode to switch to, and the operating system blocks its network as well. Put it on the device that keeps your keys.

  • Android No internet permission at all, so Android refuses every connection.
  • Mac Runs inside a macOS sandbox from the first start.
  • Linux A kernel filter blocks every network connection.
  • Windows A firewall rule, added once with the included file.
  • Chrome No network permission. Turns a Chromebook into a signer.
macOS Windows Linux Android Chrome

Nothing to install from a store? AirWallet Offline also runs as a web app, on an iPhone too: install it, then turn that device's internet off for good.

Bitcoin, Ethereum and EVM networks, Solana, Monero, Zcash

How it works

One app on two devices. A camera between them.

  1. 1
    Set up a spare phone, offlineInstall AirWallet, choose Offline signer, switch every radio off for good, and make your wallets right there. The keys never leave it.
  2. 2
    Prepare the payment onlineAirWallet on your computer builds it and shows it as a QR code.
  3. 3
    The phone reads itHold it up to the screen. Its camera reads the payment: no cable, no Bluetooth, no network.
  4. 4
    Check it, then signWho, how much and the fee, read from the very bytes it signs. No blind signing, ever.
  5. 5
    Show it back. Sent.The signature appears as a QR code. Your computer's camera reads it and sends the payment.
  6. vs
    Meanwhile, a hardware walletIt works too, but it's genuinely less safe: it plugs into that same online computer, with its app and its firmware, every time it signs.

Just want a hot wallet? AirWallet works on its own too, keys and all. Add an offline device whenever you're ready.

Why not just use a hardware wallet?

A hardware wallet keeps your keys on a small device, then plugs it into an online computer to sign. AirWallet's signer never plugs into anything.

AirWalletLedger / Trezor / other hardware wallets
Touches the internetNever. Codes cross by camera, and nothing else does.Plugs into a computer that's online, by cable or Bluetooth.
Supply chainNothing to tamper with. No device in the mail, no firmware: one app, and a signed checksum list to check it against.A device shipped to you, firmware updates and a companion app: each one a way in.
Checking a paymentA full screen. Who, how much and the fee on your phone or laptop, in plain words.A small screen, a few lines at a time.
PriceFree+ open sourceYou buy the device.
In the newsNothing to intercept. No parcel, no order with your home address on it: a phone or laptop you already own will do. For that extra bit of security, use a brand-new one that has never been online, not even once. It holds up under the most demanding threat models. $86–93Mlost to an implant in a device from an authorized resellerOct 2026 $600K+drained through Ledger's own software libraryDec 2023 270,000buyers' home addresses leakedDec 2020

First setup

Set it up once. Then it's just QR codes.

  1. 1
    Everyday wallet+Offline signer
    One app, two jobs

    On the computer or phone you use every day, pick Everyday wallet. On a spare phone or laptop, pick Offline signer: that one will hold your keys. Want the operating system to lock it down too? Give it AirWallet Offline, the build that can't connect at all.

  2. 2
    Bluetooth file sharingmicroSD cardUSB stickUSB cable
    Carry it across

    Any way that isn't the internet. Or download it right on the device, then switch the internet off for good: ever so slightly less airtight, and it still works.

  3. 3
    OnOffOff
    Go offline, make your wallet

    Airplane mode on, Wi-Fi and Bluetooth off, for good. Install, create a wallet, write its recovery phrase down. The keys are born there and never leave.

  4. 4
    Shows its codeEveryday wallet watches
    Watch it from your everyday wallet

    Tap Show to my online wallet on the offline device and scan it. Your everyday wallet follows the balance and history, never the keys.

  5. 5
    Its address
    Fund it from anywhere

    An exchange, another wallet, a friend: send to its address. Receiving needs no signature, so the offline device can stay in a drawer.

  6. 6
    Prepare, sendCheck, sign
    Send or swap

    Prepare it online, scan it with the offline device, check, sign, scan the answer back. The same few steps, every time.

Portfolio

Every wallet, one picture. Kept on your own device.

Bitcoin, Ethereum, Solana, Monero and Zcash, offline wallets included, in one chart from 1 day to all time. It's built from what the app already saw, so nothing extra goes to any server.

Total portfolio value
$84,316.52
↗ $2,164.10 (2.63%)1W
Hover the chart, or switch the range. Amounts hide with one tap. The app's portfolio view, with sample data

Vanity addresses

Your word in your address. Mined on your own GPU.

Type a word and your graphics chip starts racing through millions of keys a second, hunting for an address that carries it. Every key is made on your own machine, as a standard keypair, and each find drops into your wallet already encrypted.

Try a wordTime to a find, MacBook Air (case insensitive)
  • Solanadecade7mZqW2xNh4…hRt9<1 s
  • Bitcoinbc1qdecade3zn8wq…7ylm<1 s
  • Ethereum0xdecade91d4e8…b07e<1 s
  • Monero48decadeQp3dWv…Lz2W<1 s
  • Zcashu1decade8n3wzx…q7dk~2 s

Grinding for a friend? A split-key request finds their address without you ever seeing their key.

As well as every other feature, ever. We have them all.

And many, many more:See all 73 features

Security18

  • Air-gapped QR signing
  • No blind signing
  • App lock with Argon2id
  • Auto-lock
  • Fingerprint unlock (Android)
  • Duress PINs
  • Disguised as another app
  • Look-alike address warnings
  • Fee warnings on every chain
  • Durable-nonce drains refused
  • Sign-twice fee trick refused
  • Deterministic signatures
  • Signed releases
  • Offline app shuts every network door
  • Proof it can't connect, on screen
  • Sends you didn't make, flagged
  • No spellcheck or keyboard sees your words
  • Token approvals: see and remove

Sending10

  • Pay several people at once
  • Speed up or call off
  • Never sent twice
  • Gas and L2 fees from the network
  • Payment links
  • QR codes from pictures
  • Contacts
  • Pending sends counted
  • Close empty token accounts
  • Max sends

Coins9

  • Bitcoin: SegWit, Taproot, legacy
  • Ethereum + 7 EVM networks
  • Solana and its tokens
  • Your own ERC-20 tokens
  • Monero
  • Shielded Zcash
  • Jupiter swaps
  • SOL staking
  • Spam tokens hidden

Wallets13

  • 12 or 24 words, Polyseed too
  • Phantom, MetaMask, Cake phrases
  • A phrase's other accounts
  • Watch-only addresses
  • QR hardware wallets
  • Vanity addresses, 5 chains
  • Vanity for a friend (split key)
  • Axiom-style groups, table, bulk actions
  • BIP39 passphrases
  • Ledger Live and MyEtherWallet accounts found
  • Automatic encrypted backups
  • Removed wallets come back
  • Fresh Bitcoin addresses

Privacy8

  • Tor or SOCKS5 proxy
  • Your own nodes and RPC
  • Monero subaddresses
  • Monero payment proofs
  • Monero coin control
  • Hide amounts in one tap
  • History sealed on disk
  • Invisible to websites

Apps & devices15

  • macOS, Windows, Linux
  • Android, online and offline
  • Chrome extension, side panel
  • Offline signer in Chrome
  • Balances on the offline signer
  • Kraken Pro–inspired portfolio
  • Price charts, 1D to 1Y
  • History as CSV
  • Animated fountain QR codes
  • Layouts and designs
  • Command palette, ⌘K
  • Is this address mine? A scan answers
  • Old phones welcome: Android 10 as it comes
  • AirWallet Online, nothing to install
  • Payment notifications

Have a workflow already?

Works with the wallets you use. By QR code, both ways.

AirWallet signs for them

They prepare the payment. Your offline AirWallet checks it, signs it and shows the answer back.

  • Sparrow
  • BlueWallet
  • Nunchuk
  • MetaMask
  • Rabby
  • Safeas one of its owners
  • Solflare
  • Backpack
  • Feather
  • Cake Wallet
  • Zodl

AirWallet drives them

AirWallet prepares the payment. They check it and sign.

  • Keystone
  • Other QR signersPassport, Jade, Coldcard Q, Krux…
  • Featherits offline mode
  • CupcakeCake's signer app

Take your keys offline. For good.

Free, for macOS, Windows, Linux, Android and Chrome, and watch-only on iPhone. One app for your everyday device and your offline signer, plus AirWallet Offline for a signer the operating system locks down too.

macOS Windows Linux Android Chrome extension iPhonewatch-only Use online