local network only · runs quietly in the background

Stop emailing yourself links
just to use them on another device.

Copy on one device.
It is already on the other.

Copynsync keeps your phone and desktop in sync over your local network, quietly in the background. No cloud hop. No reopening the app every time. Just copy, paste, send files or folders when you need to, and keep moving.

0 cloud relay Your data stays on your own local network instead of taking a detour through someone else's server.
0/7 ready Install it, pair your devices, and let it sit there quietly until the next time you need it.
0 Mbps Share files at high speed between your devices on the same local network.

Most clipboard apps are really foreground apps.

If both apps are not open, the magic stops. And too many of them send your data through the cloud before it ever gets back to your other device.

Copynsync does the opposite. Pair your devices once, leave it running, and your trusted devices talk directly over your local network with TLS-secured connections. When text is not enough, you can send files and folders too without switching to another app.

A quick look inside

Same job, two screens: one desktop view, one mobile view, both built around getting in and out of your way fast.

Desktop preview of the Copynsync app

Why people leave the other clipboard apps behind

The usual ones sound fine until you actually rely on them. You keep the app open, wait for a cloud round-trip, hope the clipboard made it across, then switch to something else the moment you need to send a file.

Typical clipboard app
1 Keep both apps open in the foreground
2 Send clipboard through the cloud and wait
3 Hit the wall the second you need files or folders
4 Wonder whether it synced at all
foreground only cloud detour text only
With Copynsync
1 Pair your devices once and forget about it
2 Let it keep working quietly in the background
3 Move clipboard, files, and folders over your local network
4 Come back to a clear history when you need it
background first local network TLS-secured
The best software disappears. You should not have to think about it, babysit it, or route around it. Copynsync is meant to sit there quietly until the exact moment you need something on the other device.

What a clean handoff feels like

Not magic. Just the way it should have worked all along.

01

Copy a code on your phone

You do not open another app. You do not send yourself a message. You just copy it like normal.

02

Turn to your laptop and paste

It is already there because the app was running in the background the whole time.

03

Need more than text?

Drag in a file or a full folder, choose a trusted device, and send it without changing tools.

04

Need it again later?

Open history and find what you sent instead of trying to remember where it went.

Copynsync is built around the annoying little interruptions that keep breaking your flow all day.

Where Copynsync earns its keep

It is strongest in the everyday moments that keep making people fall back to email, chat apps, and note apps.

Everyday clipboard handoff the thing you need most

For links, codes, notes, snippets, and copied text you need on the other screen right now.

  • Copy on one device and paste on the other
  • Works quietly in the background once paired
  • No cloud relay in the middle
  • No “keep both apps open” ritual
Real file handoff when text is not enough

For screenshots, PDFs, exports, contracts, and folders you need to move without slowing yourself down.

  • Send files from desktop or mobile
  • Send full folders from desktop
  • Choose the trusted device you want
  • Approve incoming transfers before they save
The small details what makes it feel finished

The difference between “nice idea” and “I use this every day” is in the details.

  • Trusted-device pairing with matching approval codes
  • History that shows what moved and where
  • Desktop startup support so it is ready when you are
  • QR linking from Android to desktop

Why local network matters

It is not just about speed. It is about trust, privacy, and not having your clipboard bounce through the internet just to land on the laptop sitting next to you.

Runs in the background

Pair your devices once, then stop thinking about it. You should not have to keep reopening the app just to make the basics work.

Stays on your local network

Your clipboard and transfers move between your own devices on the same network instead of taking a cloud detour first.

TLS-secured device to device

Trusted devices talk directly with encrypted connections, so the handoff feels private as well as fast.

Everything people actually care about

Instant clipboard

Copy text on one trusted device and paste it on the other without opening chat apps, email drafts, or note apps just to move it across.

→ move faster
Files and folders

Send more than text when the moment calls for it. Stage files, drag folders on desktop, choose a device, and send.

→ one app, not two
Trusted-device pairing

Nearby discovery, matching approval codes, named devices, and a setup that keeps the right devices talking to each other.

→ you stay in control
Clear history

See what moved, where it went, and what still needs your attention instead of guessing after the fact.

→ nothing disappears

Why it feels different

No self-DMs

You stop using WhatsApp, Telegram, email drafts, and random notes as a bridge between your own devices.

No cloud detour

Your data stays on your local network instead of taking a trip through somebody else's infrastructure first.

No “keep it open” ritual

The app is meant to work in the background so the whole experience feels effortless instead of fragile.

No text-only limit

When text is not enough, files and folders are already part of the same handoff flow.

Download for free. $0.

Put it on the devices you use every day and let it do its job quietly in the background.

Latest production build is ready to download.

Desktop

For the laptop or desktop where you actually work.

Download for macOS Download for Windows
Mobile

For the phone in your hand when you need something on the other screen immediately.

Download for Android

Set it up once. Forget it is there.
Notice it only when it saves you time.

Local network handoff for the devices you already use every day.