Pocket Familiar · PC + iPhone · Setup

Pair your phone to your PC.

Pocket Familiar for Windows lives on your PC. Pocket Familiar lives on your iPhone. Pairing them makes the phone a second door into the same companion — same memory, same voice, same conversation you left open on the desk. The two apps talk to each other directly, over a private network made of your own devices. Nothing passes through our servers, and we cannot read any of it.

About 15 minutes Windows PC + iPhone One free Tailscale account Nothing through our servers
Desktop pairing is in beta

Everything on this page works today, and it is not one tap yet. During beta, the secure address and the one-time enrolment code come from us, set up with you directly. Early buyers get walked through the whole thing by us — email hello@sinandsarah.com and we will book it in and do it with you, screen to screen.

The one-tap version ships in a later build. This is the version that exists.

Before you start

Five things. Gather them first and the rest is a straight line.

What you need
Windows PC Windows 10 or 11, with Pocket Familiar for Windows installed and working.
iPhone iOS 17 or later, with Pocket Familiar installed. It is free. There is no Android app yet.
Tailscale account One free account, used on both devices. You will make it during Step 1.
Enrolment code A one-time code from us. Email hello@sinandsarah.com and we will set it up with you.
Time About fifteen minutes, with both devices in front of you. You need to be able to see the PC screen from the phone.

One word of jargon, glossed once. Tailscale is a free app that lets your own devices reach each other privately, wherever they are. It calls that little private network a tailnet. Your tailnet is just your devices. Nobody else is on it, and nothing on the open internet can see into it — Tailscale's public-sharing feature, Funnel, stays off for this setup. Messages are encrypted for your paired installation before anything relays them.

Step 1 — Tailscale on your PC

  1. Download it. Go to tailscale.com/download and get the Windows version. Run the installer the way you run any other program. There is no terminal step and nothing to configure.
  2. Find it in the system tray. Once it installs, a Tailscale icon appears in the tray at the bottom-right of your screen, near the clock. If you do not see it, click the small up arrow to show the hidden icons.
  3. Sign in. Right-click that tray icon and choose Log in. Your browser opens. Sign in with Google, Microsoft, Apple, or GitHub — whichever account you will actually remember. Write down which one you picked. You need the same one on the phone in Step 2, and picking a different one there is the single most common thing that goes wrong.
  4. Check it took. Open the tray icon again. You should see yourself signed in, Tailscale switched on, and this computer listed among your devices. That device list is the thing to trust. If your PC is on it, Step 1 is done.

Step 2 — Tailscale on your iPhone

  1. Install the app. Get Tailscale from the App Store. It is free.
  2. Open it and tap Get Started.
  3. Say yes to both prompts. Your iPhone asks permission to add a VPN configuration, and asks to send you notifications. Allow both. The VPN prompt is just how iOS asks permission for any private-network app. Your browsing is not being routed through anybody. The notifications are how Tailscale tells you if you ever need to sign in again.
  4. Log in with the same account. Tap Log in and sign in with the exact same account you used on the PC — same Google, same Microsoft, same Apple, same GitHub. Two different accounts means two separate private networks, and the phone and the PC will never find each other.
  5. Switch Tailscale on, then check the list. Your phone and your PC should now both appear in the same device list, viewed from either device. Both devices, one list. That is the whole test.

Step 3 — Pair the PC and the phone

Both devices in front of you now. The first four steps happen on the PC, the last two on the phone.

  1. On the PC, open Pocket Familiar, then "Settings", then "iPhone".
  2. Enter the secure gateway address. Type in the address we set up with you. It always looks like this shape: https://your-device.your-tailnet.ts.net:8443 The PC app accepts private Tailscale addresses only. Public tunnels and ordinary web addresses are refused on purpose. If it refuses one, that is the privacy guarantee doing its job, not a fault.
  3. Paste the one-time enrolment code. Paste the code we gave you. It is used once and then discarded — it is never saved into the PC app's files or your browser.
  4. The PC app shows a QR code. It will tell you to scan it once in Pocket Familiar. Leave it on screen. Treat that square like a key to your house. Do not screenshot it, do not post it, do not send it to anyone — including us. It expires, and the expiry time is printed underneath it.
  5. On the phone, open Pocket Familiar and choose "Pair with Companion". Allow camera access when it asks.
  6. Scan the QR code off your PC screen. Then wait for the phone to say Linked through Tailscale. That line is the finish line. You are paired.
Check it worked — two minutes

Do not just assume it held. Four quick things, in this order:

  • Send a short message from the phone. The reply should appear on the phone and on the PC.
  • Tap the familiar on the phone. Pocket Familiar on the PC should register the touch.
  • Close and reopen Pocket Familiar. Unlock the phone fully first. The chat should come back on its own, with no new QR code.
  • Close and reopen Pocket Familiar on the PC. The same pairing should reconnect by itself.

If either restart drops the link, stop there and read the next section before you touch anything.

If something doesn't connect

Almost every failure is one of these, listed in the order they actually happen.

Still stuck

Email hello@sinandsarah.com and tell us which step you reached and what the screen said. Early buyers get walked through it by us.

Send us screens, never secrets. We will never ask you for your QR code, your enrolment code, your AI provider key, or your Tailscale password — and if anyone does, it is not us.

Two halves, one companion

Pocket Familiar on the PC · Pocket Familiar on the phone

About Pocket Familiar for Windows All products

Questions before you start? hello@sinandsarah.com