WhatsApp Business app vs API: how to decide

What the Business app gives you

The app is free and phone-first. It includes:

• a business profile with hours, address, website and a catalog;
• labels, quick replies, and greeting and away messages;
• broadcast lists and status posts;
• linked devices, so the account also works on a laptop.

Linked devices give a small team access, but no assignment, ownership or routing.

Broadcast lists and paid broadcasts

A classic broadcast list reaches only people who saved your number, and list size is capped. Newer paid business broadcasts, in eligible markets, drop that rule and report delivery, reads and replies. Check which one your account offers.

What the Platform gives you

The API connects software to WhatsApp. What you get depends on that software:

• several people on one number, with assignment, in a shared inbox;
• approved templates to reach people after the 24-hour window;
• broadcasts to opted-in customers, whether or not they saved your number;
• replies that use your bookings, orders or invoices;
• delivery status per message, reporting and an activity history.

What it costs you:

• Meta's per-message fees, set out in our pricing guide;
• software on top;
• template review before messaging outside the window;
• quality checks before higher sending limits.

Three questions that decide it

1. How many people answer at once? If duplicate replies and unclear ownership are routine, move.
2. Do you start conversations at scale? Order updates or reminders to thousands need the Platform. A few manual messages a week do not.
3. Does a reply need data? If staff keep opening a calendar or order system to answer, connecting it saves time.

If all three point to the app, stay. Paying for software that repeats what the free app does is the common mistake.

What changes when you move

Moving to the API brings Meta's platform rules and a question of who holds the account.

• Chat history. A full migration starts with an empty inbox. Coexistence can copy contacts and up to six months of one-to-one chats.
• Platform rules. The 24-hour window, template approval, quality rating and messaging limits apply.
• Account ownership. The WhatsApp Business Account holds your number and templates. Whether it sits in your Meta business or a vendor's decides what you keep if you leave.

Coexistence: app and API together

WhatsApp coexistence lets an eligible number run on the Business app and the API at once. New one-to-one messages appear on both sides, and you can sync contacts and recent history.

It suits a shop where the owner answers from the phone and a small team works the queue. It needs WhatsApp Business app version 2.24.17 or later and a Meta partner that supports it.

Who should hold the account

Ask every vendor: will the WhatsApp Business Account be in our own Meta business, and can we see it?

With Meta's Embedded Signup, you sign in to your own Meta account and connect the number; Meta states you keep ownership and full access. A vendor that holds the account for you makes your exit depend on them.

Either way, confirm you can export each contact's consent record.

Before you migrate

• Pick the number and the path. Keep the number customers know, start fresh, or use coexistence.
• Check your scaling path. Business verification raises your limit; don't find out the week of a campaign.
• Submit templates early. A reminder, an update and a promotion are different templates.
• Export what you want to keep. Labels, quick replies, contacts and chats, before the number moves.
• Plan the catalog. A catalog set up in the app does not appear on the Platform by itself.
• Brief the team. Move in a quiet week, not before a sale.

Compare a real working day

Ask each provider to show your actual workflow. Whichever way you go, settle who owns the number first.

Keep the app with Otobiz

Otobiz connects eligible WhatsApp Business app numbers to the API with an in-app code. The app keeps working on your phone while your team answers from a shared inbox.