Can I use Cooby on multiple devices or WhatsApp numbers?

It depends on how you connect WhatsApp to Cooby. Each member in your Workspace can connect through the WhatsApp Business API, Cloud Sync, or the Chrome Extension, and each option works differently with devices and numbers.

Not sure which one you use? Go to WhatsApp Connections in your Cooby Workspace to see each member's connection.

WhatsApp Business API

This is the best option if your team shares one business number.

• Your whole team can work from the same number in Conversations.
• Every reply records the teammate who sent it, so you always know who answered a contact.
• Admins choose who can reply in Settings > Conversations.
• You can keep using the WhatsApp Business app on your phone with the same number.
• Group chats do not sync through the API yet. Use Cloud Sync or the Chrome Extension to sync your groups.

Cloud Sync

Cloud Sync links to your WhatsApp account itself, so it works no matter which device you use.

• Each member links their own WhatsApp account by scanning a QR code.
• Messages sync to your CRM automatically, even when you send or receive them on your phone. You do not need to keep a browser open.
• You can keep using WhatsApp on your phone, WhatsApp Web, or WhatsApp Desktop as usual.

Chrome Extension

The Extension works inside WhatsApp Web, so it follows the same limits as WhatsApp Web.

• Use one WhatsApp number with one Cooby account.
• If you use more than one number, create a separate Cooby account for each one and log in with the matching number every time.
• Avoid using one number across several Cooby accounts. Your data may be overwritten, and if CRM sync is on, messages may be duplicated.
• If you switch computers often, WhatsApp may load fewer chats on a new device, so some older chats and contacts may not appear.

Combining connections

• Each member syncs through either Cloud Sync or the Chrome Extension at a time, never both.
• If you have WhatsApp Web open with the Cooby extension installed, the extension syncs your messages. Otherwise, Cloud Sync does.
• You can add an API connection alongside either one. The API then carries your 1:1 chats, and Cloud Sync or the extension carries your group chats.
• The number you connect through the API does not need to match the number you use for Cloud Sync.

Want your team to share one number? Use the WhatsApp Business API. Learn more in Connect WhatsApp to Cooby: which option is right for you?

We hope this helps. For any questions, reach out to support@cooby.co 💜

Updated on: 14/10/2026