Updated 15 October 2026

WhatsApp Business app or API: what changes for a small business?

The WhatsApp Business app is a free app for replying yourself from your phone or linked devices; the WhatsApp Business Platform (the API) lets software such as an AI receptionist reply for you, with your team answering from that software’s dashboard. With Zatio, your number works on the Platform rather than the app, and on the Platform Meta charges for some messages.

App or Platform, side by side

General comparison. Meta sets the rules and prices for both and can change them.
What we compareWhatsApp Business appWhatsApp Business Platform (API)
Who repliesYou and your team, in the appConnected software, such as Zatio, and your team from its dashboard
Where fromThe app on your phone and linked devicesThe provider’s dashboard (with Zatio, the Zatio dashboard, also on mobile)
Automatic repliesGreeting and away messages, quick repliesFull conversations, at night too
What Meta chargesThe app is freeMeta charges for some messages, by type and country
24-hour windowDoes not applyFree-form replies within 24 hours of the customer’s last message; approved templates outside it
Setting upDownload the app and verify the numberThrough a provider, with a Meta business account, and Meta may ask to verify the business

What changes when you move to the Platform

  • Your team replies from a dashboard

    Conversations live in your provider’s dashboard rather than the app. With Zatio, that is the Zatio dashboard, on a computer or mobile, and Zatio steps aside when someone from your team joins the conversation.

  • Your number can usually come with you

    An existing WhatsApp Business number can usually be migrated. With Zatio, once migrated it works through the Platform and no longer in the WhatsApp Business app. History already on your devices stays there.

  • Meta’s rules on timing

    When a customer messages you, you can reply freely for 24 hours from their last message. Outside that window, WhatsApp only allows templates approved by Meta.

  • Meta’s charges

    Meta charges for some messages, depending on the type of message and the country, and publishes its rates. With Zatio they are passed through at cost, with no markup.

Business verification in Meta

Timings depend on Meta, so it helps to have your company details ready.

  • A Meta business account

    To connect a number to the Platform you need a business account with Meta (Meta calls it a business portfolio).

  • Verification

    Meta may ask you to verify your business with official details, such as your registered name and address. How long it takes depends on Meta.

  • Display name

    Meta reviews the name customers see on your WhatsApp profile, so use your business’s real trading name.

Which suits a small business

  • The app suits you if

    You reply yourself, messages are few and an away message is enough out of hours.

  • The Platform suits you if

    You want every message answered straight away, at night too, with the same assistant on your phone line and website, and your team stepping in from one dashboard.

How Zatio does it

  • The official Platform, from your dashboard

    Zatio is verified by Meta as a WhatsApp Business Tech Provider: you connect your WhatsApp number yourself from your dashboard.

    Zatio and WhatsApp 

  • Your team, in the Zatio dashboard

    Your team replies from the Zatio dashboard, also on mobile, not from the WhatsApp Business app. Every conversation is there with its summary.

    How Zatio works 

  • In all 3 plans

    WhatsApp, phone and website chat on every plan, with 300, 1,000, 3,000 chat and WhatsApp conversations a month. Meta’s fees at cost.

    See pricing 

Questions

Can I keep using the WhatsApp Business app with Zatio?

Not on the same number. With Zatio, the number moves to the WhatsApp Business Platform and works through Zatio rather than the app, and your team replies from the Zatio dashboard, also on mobile.

What does Meta charge?

Meta sets its own WhatsApp charges, which depend on the type of message and the country. With Zatio they are passed through at cost, with no markup, on top of your plan, which starts at £69 a month excluding VAT.

Do I need a new number?

Usually not: your WhatsApp Business number can be migrated. With Zatio, once migrated it stops working in the WhatsApp Business app and works through Zatio instead.

What is the 24-hour window?

When a customer messages you, you can reply freely for 24 hours from their last message. Outside that window only templates approved by Meta can be sent, and Zatio uses those templates when it needs to message later.

How do I connect WhatsApp?

Zatio is verified by Meta as a WhatsApp Business Tech Provider: you connect your WhatsApp number yourself from your dashboard. Along the way, Meta may ask for business verification.

How many WhatsApp conversations does each plan include?

Essential, 300; Professional, 1,000; Growth, 3,000 chat and WhatsApp conversations a month. All 3 plans include the phone line and website chat too.

Hear how Zatio would answer

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  • Keep your number
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