AirTransfer
Download for Mac

Private by design

Send anything. Anywhere.
Encrypted.

Move files and clipboard between your phone, laptop, and friends in seconds. Peer‑to‑peer, sealed with keys only you hold.
Download for Mac
 Try now free

By the numbers

What you actually get.

  1. 01 0K+ Active users People moving files with AirTransfer this month.
  2. 02 0 Trackers Third-party scripts that watch you. We use zero.
  3. 03 <0ms Clipboard hops Typical time for copy on one device to land on another.
  4. 04 MAC WIN LIN IOS AND Platforms Supported on every desktop and mobile OS you own.

What you get

Privacy, reach, speed, and honesty. Engineered in, not bolted on. What AirTransfer holds on every device, every transfer.

  1. We can't read your files

    Your stuff is locked on your device before it goes anywhere. Even our own servers only see sealed boxes.

  2. Every device, one you

    Windows, macOS, Linux, iPhone, Android. Sign in once, your friends come with you everywhere.

  3. Fast, in any room

    AirTransfer finds the quickest way to your friend automatically. If one path is busy, it tries the next.

  4. Honest by design.

    No ads. No third-party watchers. No surprise charges. If the deal changes, we tell you straight.

Always reachable

The internet is messy. AirTransfer doesn't care. It'll find a way to your friend's device, then forget it ever met them.

  1. CH 01 // LAN_DIRECT LIVE

    Same Wi-Fi. Straight across.

    When you and your friend share a network, AirTransfer goes peer-to-peer over mDNS. No detours, no servers, nothing leaves the room.

    LATENCY
    ≈ 4 ms
    HOPS
    0
    RELAY
    P2P · mDNS
    SEAL
    AES-256
  2. CH 02 // GLOBAL_P2P LIVE

    Different cities. Still direct.

    AirTransfer carves the shortest private path through the internet using ICE candidates. The traffic is yours end to end, locked the whole way.

    LATENCY
    ≈ 124 ms
    HOPS
    7
    RELAY
    P2P · ICE
    SEAL
    AES-256
  3. CH 03 // FIREWALL_TRAVERSE LIVE

    Strict firewall. We tunnel.

    Some networks block direct connections. AirTransfer routes the sealed payload over a private courier (TURN). The courier can't peek inside.

    LATENCY
    ≈ 180 ms
    HOPS
    12
    RELAY
    TURN · sealed
    SEAL
    AES-256
  4. CH 04 // OFFLINE_PARK LIVE

    Friend asleep. We wait.

    If the recipient's device is off, AirTransfer parks the sealed package in your private inbox. It delivers when they wake, then forgets.

    LATENCY
    on wake
    HOPS
    1
    RELAY
    sealed inbox
    SEAL
    AES-256

Files

No size limits. No detours through the cloud.

Move a 50 GB folder from your phone to your laptop without uploading it anywhere first. AirTransfer sends it straight between your devices when it can, takes a private detour when it has to, and waits patiently if your friend is offline.

Clipboard

Copy here. Paste there. In half a blink.

Links, snippets, screenshots. Copy on one device and they're ready on the next. Locked on the way, never written down by us, and only your devices remember the history.

Sharing

Share with anyone. Even people who don't have AirTransfer.

Make a short link. Whoever you send it to opens it in their browser, no app needed. The key to unlock the file lives in the link, so only the person you sent it to can open it.

Privacy you can feel

Your payload sits in a sealed vault from the moment it leaves your device. These are the four cryptographic properties that keep it sealed end to end.

  1. 01 E2E · AES-256-GCM

    End-to-End Encryption

    Payload is sealed on-device before it leaves. Keys live only on your devices. Never on our servers, never in a backup.

  2. 02 ZERO-KNOWLEDGE

    Zero-Knowledge Architecture

    Our infrastructure only ever sees sealed ciphertext. Metadata is minimised; we cannot tell what we don't store.

  3. 03 FORWARD SECRECY

    Forward Secrecy

    Each transfer derives a fresh single-use key. A future key compromise can't unseal anything you sent in the past.

  4. 04 GDPR · COMPLIANT

    GDPR Compliant

    Built to GDPR principles regardless of where data sits. Minimised collection, documented lawful basis, public sub-processor list, and a one-click delete-everything.

    5.

Plans

Free for you. Pay only when you need more room.

Three vault tiers, each with its own capacity readouts. Pick the size of your life and we'll seal the rest. Privacy is the same on every tier.

  1. 01 // VAULT · BASE SEALED

    Free

    For one of you, on every device.

    $0 /forever

    FILES 5 GB
    HISTORY 7 DAYS
    • All your devices, one you
    • Direct sending, with backup paths
    • Files up to 5 GB
    • 7 days of copy-paste history
    • Email support
    Get AirTransfer
  2. 02 // VAULT · PLUS RECOMMENDED

    Plus

    For people who live across devices.

    $5 /month

    FILES 50 GB
    HISTORY 7 DAYS
    • Everything in Free
    • Files up to 50 GB
    • 7 days of copy-paste history
    • Tomorrow-proof encryption (opt-in)
    • Priority support
    Start Plus
  3. 03 // VAULT · PRO SEALED

    Pro

    For power users and small teams.

    $15 /month

    FILES 500 GB
    HISTORY 15 DAYS
    • Everything in Plus
    • Files up to 500 GB
    • 15 days of copy-paste history
    • Up to 10 trusted contacts in your circle
    • Priority support
    Start Pro

// PROVISIONAL Plans, prices, and limits are still being settled and may change. Privacy is identical on every tier. That part won't change.

What's new

tail -f releases.log

The live release feed. Each line is a real shipped build, with the stuff we changed written so a friend could read it.

  1. [2026-05-09 14:32:08] OK v0.4.2 DESIGN Four ways your file gets there

    A new section that walks through the four ways AirTransfer reaches your friend's device: same room, different cities, tricky network, or friend asleep.

  2. [2026-04-22 09:11:24] OK v0.4.0 SECURITY Tomorrow-proof locks, on request

    Plus members can now flip on extra-strong encryption that's built to outlast even tomorrow's most powerful computers, and it doesn't slow your transfers down.

  3. [2026-04-03 17:48:51] OK v0.3.7 PERF Copy-paste is even faster

    We trimmed the time between "copy on phone" and "paste on laptop" by almost half. Code snippets show up with proper colours too.

  4. [2026-03-17 12:05:09] OK v0.3.5 PLATFORM Linux on Raspberry Pi & Apple Silicon

    Native builds for Raspberry Pi 4 and 5, and for Linux on Apple-silicon Macs. Same speed and features as everywhere else.

View full changelog

Ready when you are

Send anything. Privately.

Free for you and your devices. Set up in under a minute.

Download for Mac
 Try now free