The WhatsApp Business app is a free phone app for one business, best when one or two people reply by hand. The WhatsApp Business Platform, usually called the WhatsApp API, connects your number to software, so an AI can reply, several staff can share one inbox, and messages link to bookings and other tools. The API is used through a provider such as Connectail, and Meta may charge for some message types.
Side by side
| WhatsApp Business app | WhatsApp Business Platform (API) | |
|---|---|---|
| Cost | Free app | Provider subscription, plus Meta charges for some messages |
| Who replies | You, from your phone (plus linked devices) | An AI and your whole team from one inbox |
| Automation | Greeting, away message, quick replies; Meta's Business AI where available | AI answers, routing, booking requests, integrations |
| Team access | Limited to linked devices | Unlimited staff, depending on provider |
| Setup | Install the app | Connect through Meta's official sign-up with a provider |
| Best for | Very small businesses with few chats | Busy businesses, several staff or branches |
When the free app is enough
- You get a handful of chats a day and reply yourself.
- Fixed auto-replies cover what you need.
- Nobody else needs to see the conversations.
When to move to the API
- Customers wait for replies during busy hours or at night.
- Two or more people need to answer from the same number.
- You want an AI to answer questions, not just send one fixed message.
- You want WhatsApp enquiries in the same place as calls, website chat and Instagram.
How connecting works with Connectail
- Sign in with your own Facebook account in Meta's official WhatsApp sign-up. Connectail never asks for your passwords.
- Choose the business number and confirm it with the code Meta sends.
- Send a test message from another phone and check the reply before telling customers.
If your number is already on the WhatsApp Business app, our team helps you pick the right way to connect it during free setup. Read what it costs or see the WhatsApp AI receptionist.
Frequently asked questions
Is the WhatsApp API free?
No. You use it through a provider, which charges a subscription, and Meta charges for some message types under its published rates.
Do I need a new number for the WhatsApp API?
Not always. Connectail's team helps you decide whether to connect your existing number or a new one.
Can several staff reply from one WhatsApp number?
Yes, with the API through a team inbox. Connectail plans with team access have no per-user charge.