Installing on Android and ChromeOS

Install it

1. Open the app in Chrome.
2. Tap the menu ⋮, then Add to Home screen — or tap the install prompt if Chrome offers one.
3. Confirm. The icon lands on your home screen.

ChromeOS is the same flow, from the same menu. Firefox and Samsung Internet can both do this too, though they word the menu item differently — Firefox calls it Install, Samsung Internet Add page to → Home screen.

Why there is no Play Store app

Since Android 10, only the app you are currently using, the active keyboard, or an accessibility service may read the clipboard. That rule exists because an app that could silently read your clipboard would harvest every password and one-time code you copy, and it applies to every app on the platform without exception.

So a native RealtimeClipboard app could offer a share-sheet entry and a store listing — and nothing else that the installed web app does not already do. It could not watch your clipboard in the background, because nothing can. Shipping one would mostly mean asking you to trust a second binary for no capability in return.

The honest model on mobile: you bring clips to the app, and the app brings clips to you. Receiving is automatic — anything copied on your desktop is waiting when you open it. Sending is a paste or a share, and always will be.

Check it worked

• It opens with no address bar. That is the whole tell: a home-screen shortcut still shows Chrome's UI, an installed web app does not.
• The status bar reads T1 · paste only, which is correct and is not a fault. On Android that is the ceiling.
• It opens without a network connection, showing your existing history.

Your first sync

1. Open the app on your computer and note the five-character key.
2. Enter the same key on the phone.
3. Copy something on the computer. It appears on the phone with no further action.
4. Going the other way: copy on the phone, open RealtimeClipboard, and long-press → Paste into the editor. Or use Android's share menu from whatever app you are in.

When it does not work

No install prompt appeared

Chrome decides when to offer one and does not always. The menu route works regardless and is the reliable one — do not wait for a prompt.

It opened in the browser instead of its own window

You have a bookmark shortcut rather than an installed app. Remove it and add it again from the menu; the item you want is Add to Home screen, and Chrome shows the app icon in the confirmation dialog when it is going to install properly.

Clips do not arrive when the app is closed

Correct, and unavoidable: a web app is not running when you are not looking at it, so it collects what is waiting on the relay when you open it. Nothing is lost — the session holds it.

Copying on the phone does not send

The Android 10 rule above. Paste into the app, or share to it.

Uninstalling

Long-press the icon and uninstall it like any other app, or remove it from Chrome's Settings → Site settings. Nothing is left on the device beyond the browser storage it used for your settings and history.

Every other platform: the installation guide. If your clipboard is not syncing for reasons unrelated to this app, start here. Something wrong or out of date? Open an issue.