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How to join an existing shop?

Premium6 min readUpdated October 28, 2026

Use several devices on the same shop: same email, or a 6-digit invitation code valid for 3 minutes.

Want to use several devices with the same Tunder register? You can, with the multi-device option. The account owner needs a Premium subscription that covers at least 2 devices.

A second device joins the shop in one of two ways, depending on the email used. The invitation code is generated from the app or from the back-office (on a computer).

Which case is yours?

  • Case 1: the same email as the owner

    On the new device, open the Tunder app and sign in with the same Apple or Google account as on the first device. The shop syncs by itself: you land directly in the existing shop, with no code and no other action.

  • Case 2: a different email

    The invited user creates their own Tunder account (with Apple or Google), then enters an invitation code given by the owner. Follow the two parts below: “Generate the code” on the owner's side, then “Enter the code” on the new device.

Generate the code from the app (owner)

Do this on a device that is already connected to the shop, with the owner's account.

  1. Open the device list

    In the app: menu ☰, then Settings, General tab, then Devices.

  2. Tap the + button

    It is at the bottom right of the Devices screen.

  3. Give the code to the invited user

    A 6-digit code appears with a countdown. Give it to the person who is joining the shop, for example with the “Share the code” button.

    • Duration: the code is valid for 3 minutes. After that, generate a new one.
    • Privacy: the code gives access to your shop. Do not post it anywhere.

Enter the code on the new device (invited user)

This part is always done in the Tunder app on the new device.

  1. Open the app and sign in

    Download and open the Tunder app, then sign in with your own Apple or Google account.

    • Make sure you have created your account and are signed in, and that you are not using the app in demo mode: otherwise the option to join does not appear.
  2. Tap “Join shop”

    The button is under “Create shop”, on the welcome screen.

  3. Enter the code you received

    Type the 6 digits given by the owner, then tap “Join”.

    • If it works: Tunder shows “Successfully joined a shop” and you are in the owner's shop.
    • If the code is refused: “The code entered is wrong”. See the questions below.
    • If the device already has a shop: Tunder warns you that all its data will be deleted (“Delete and join” or “Cancel”). This action cannot be undone: export your data first if you want to keep it.

Already have an account and a shop?

You can join another shop from your shop list, in the app.

  1. Open the shop list

    Tap the menu icon ☰, then the name of your shop at the bottom of the screen.

  2. Tap the + button

    It is at the bottom right of the “My shops” screen.

  3. Choose “Join to another shop”

    It is under “Create a shop” and “Duplicate a shop”. Then enter the code, as in the previous part.

Frequently asked questions

Who can generate an invitation code?
A device connected to the shop with a Premium account that covers at least 2 devices. In the app: Settings, Devices, + button. In the back-office (admin.tunder.co): Settings, Devices, “Add device”, “Another email”.
How long is the code valid?
3 minutes. In the back-office, a new code appears by itself when the countdown ends. In the app, generate a new one.
Tunder says “The code entered is wrong”, or I can't join. What should I do?
Check that the code was generated from a device already connected to the shop (Settings, Devices, + button), that it is less than 3 minutes old, and that the app is up to date on the device that is joining (the version is shown at the bottom of the app's Settings page).
I use the same email on both devices, but the shop does not appear.
Sign out from Settings, My account, Log out, then sign in again with the same account. Both devices then show the same shop. In this case, no code is needed.
I don't see “Join shop”.
Sign out, sign in again with your Apple or Google account, and check that you are not using the app in demo mode.
What happens to the data on the device that joins the shop?
If the device already has a shop with data, Tunder warns you before joining: the data of that shop will be deleted, and this cannot be undone. Export it first if needed.
How do I remove a device from my shop?
In the back-office (admin.tunder.co): Settings, Devices, the ⋮ menu of the row, “Disconnect”. The device is then disconnected from all your shops. To reconnect it, you will need to add it again with a code.

See also

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