Local-first continuity · macOS 13+ · Android 11+
One shared clipboard. AirDrop-style file drops. Your phone's screen in a Mac window. Notifications, media keys and auto-unlock — over your own Wi-Fi, Bluetooth, or a USB cable. End-to-end encrypted. It never touches the cloud, because there is no cloud.
No account · No servers · No telemetry
The feature set
Every Continuity trick you miss when one pocket holds an Android — rebuilt to work across platforms, and to work offline.
Copy on the phone, paste on the Mac — and back. Text, links with real URL semantics, and images. Screenshots in HEIC, WebP or JPEG are transcoded to PNG in flight, so they paste anywhere.
SHA-256 echo guards mean nothing ever ping-pongs between devices.
Hardware-encoded H.264 mirroring at 30 fps. Type with your Mac keyboard, tap and drag with your trackpad — multi-touch included. Adaptive bitrate rides your network instead of fighting it.
Receiver-driven AIMD ladder: quality climbs when the network is clean, backs off before it stutters.
Encrypted 2 MiB chunks with per-chunk integrity. Wi-Fi drops, app restarts — transfers resume exactly where they stopped. Batches ship as one ZIP. Right from each OS share sheet.
Your phone buzzes in your pocket; the alert lands in macOS Notification Center. Dismiss it on either device and it's gone from both.
Whatever's playing on Android shows up in the Mac's Now Playing. Play, pause, skip — straight from your Mac keyboard, like the audio was local.
Send the article, map or video you're mid-way through to the other device. It shows up as a tap-to-open offer — in either direction.
Bluetooth proximity unlocks your Mac when your phone gets close, and locks it again when you walk away. Watch-unlock energy, Android edition.
Developer ID build · thresholds: unlock −60 dBm, re-lock −80 dBm
On the Mac: a quiet menu-bar agent, no Dock icon, no windows. On Android: a lean foreground service and a one-tap Quick Settings tile. Built to be forgotten.
Transports
Pick the physical layer; the protocol doesn't care. Switch any time — pairing and encryption stay identical.
MODE 0 — WI-FI
Devices find each other automatically over Bonjour/mDNS — no IP addresses, no port forwarding, no setup beyond the passphrase. Fastest path for files and mirroring.
_clip-sync._tcp · TCP 34567MODE 1 — BLUETOOTH LE
Dual-role BLE keeps clipboard and control traffic flowing on the train, in a café with hostile Wi-Fi, or in the middle of nowhere. It also powers proximity auto-unlock.
GATT · 512-byte fragmentsMODE 2 — USB
Plug in a cable and tunnel everything over ADB. Deterministic latency, zero radio interference — the mode for screen mirroring purists and locked-down networks.
adb reverse tcp:34567Security model
This is everything an eavesdropper on your network would see. Each frame additionally authenticates its context — "CLIPBOARD:1714980000123" — so a captured packet is useless anywhere but its exact original slot.
Coverage
If you've used two Apple devices together, you already know how this works. Here's the map.
| Apple Continuity feature | Apples to Androids | Notes |
|---|---|---|
| Universal Clipboard | ✓ Yes | Text, URLs and images, both directions |
| AirDrop | ✓ Yes | Encrypted, resumable transfers; batches as ZIP |
| iPhone Mirroring | ✓ Yes | Android → Mac, with full keyboard & touch control |
| Auto Unlock (Apple Watch) | ✓ Yes | BLE proximity; Developer ID build |
| Notifications on Mac | ✓ Yes | Bidirectional dismiss |
| Now Playing / media keys | ✓ Yes | Transport controls from the Mac |
| Handoff | ✓ Yes | URL / activity hand-off, tap-to-open |
Questions
No. Everything travels directly between your devices over your own Wi-Fi network, Bluetooth Low Energy, or a USB cable. It works on networks with no internet access at all.
There is no server. There is no account. Data is encrypted end-to-end with AES-256-GCM using keys derived from a passphrase only your two devices know, and it moves point-to-point between them.
Android 11 or later, and macOS 13 Ventura or later. The Mac app is a lightweight menu-bar agent; the Android side runs as an efficient foreground service with a Quick Settings tile.
Set the same passphrase (12 characters minimum) on both devices — keys are derived locally with PBKDF2-HMAC-SHA256 × 120,000. On Wi-Fi the devices discover each other automatically via Bonjour, so there are no IP addresses to type.
The Developer ID build is the full experience, including proximity auto-unlock and wired USB mode. The Mac App Store build is fully sandboxed, so those two features are omitted — clipboard, files, mirroring, notifications, media and handoff are identical.
Mirroring streams video today — H.264 at 30 fps with adaptive bitrate — plus full remote keyboard and touch input. An audio channel is on the roadmap, and the wire protocol for it already ships.
Get it
Install the menu-bar agent on your Mac and the app on your Android, set one passphrase, and stop emailing files to yourself.
Coming soon — the first public builds are on their way. Check back shortly.
macOS 13 Ventura+ · Developer ID (full) or Mac App Store (sandboxed)
Android 11+ · phone or tablet