--- title: "WhatsApp Business app vs API: which one fits a Bangladeshi shop?" description: "WhatsApp Business app vs API compared for Bangladeshi shops: team replies, broadcasts, automation, cost and risk, with a simple test for when to switch." url: https://salemag.net/blog/whatsapp-business-app-vs-api language: en published: 2025-01-19 updated: 2026-10-24 author: SaleMag Team tags: - whatsapp business app - whatsapp business api - f-commerce - bangladesh --- # WhatsApp Business app vs API: which one fits a Bangladeshi shop? > The WhatsApp Business app is a free phone app for one person handling a manageable number of chats. The WhatsApp Business API is Meta’s official connection for software, where a team shares one number, templates reach past customers and an AI can reply. Switch when two people need the number or chats outgrow one phone. - The app is free and runs on one phone; the API has no app and runs inside software your team logs into. - App broadcast lists only reach people who saved your number; API broadcasts use approved templates and opt-in. - The API charges per delivered message, so it only pays off when it saves staff time or wins orders. - Coexistence lets an eligible number stay in the app while it is connected to the API. - Never move to an unofficial ‘API’ tool; QR and web-scraping senders put the number at risk of a ban. Picture a two-person boutique in Mirpur. Sumaiya answers WhatsApp on the shop phone, her cousin handles Messenger on a laptop. On a normal day they get about forty WhatsApp chats and it works. During a Friday live session they get two hundred, the phone gets passed around, and three customers are quoted three different delivery charges. Is that a reason to move to the WhatsApp Business API? Maybe, maybe not. The API costs money and changes how you work. This post compares the two honestly, shows what you gain and lose, and gives you a simple test for when to switch. ## What is the difference between the WhatsApp Business app and the API? The WhatsApp Business app is a free phone app for one person; the WhatsApp Business API is Meta’s official connection for software, so a team, rules and an AI can work one number. Customers see a normal WhatsApp chat either way. The difference is entirely on your side. | | WhatsApp Business app | WhatsApp Business API | |---|---|---| | Where you reply | A phone, plus a few linked devices like WhatsApp Web | A web inbox in the platform you use | | Team | Everyone shares one login, no record of who replied | Each person logs in; chats can be assigned | | Auto replies | Greeting message, away message, quick replies | Keyword, welcome and away rules, flows, AI chatbot | | Catalog | Built-in catalog on your profile | Your product list in the platform, or Meta’s catalog | | Messaging old customers | Free-form text, any time | Approved templates after the 24-hour window | | Broadcasts | Lists of up to 256, only to people who saved your number | Template campaigns to opted-in contacts, no list cap | | Other channels | WhatsApp only | Often Messenger and Instagram in the same inbox | | Cost | Free for chats | Meta charges per delivered message, plus the platform fee | | Setup | Install and verify the number | Meta business portfolio and embedded signup | ## What does the WhatsApp Business app do well? The app does the basics well for one person: it is free, quick to set up and lets you reply to anyone at any time without templates. For a small shop that is a lot. - **No 24-hour rule in practice.** You can message a customer from last month with plain text. On the API, that needs an approved template. - **Catalog and labels.** You can show products on your profile and label chats as "New order", "Paid" or "Pending". - **Quick replies.** Type `/` and a shortcut, and your delivery charge text appears. - **No per-message cost** for replying to customers. If one person handles every chat, and most days stay under what one phone can manage, the app is the right tool. Don’t pay for software to solve a problem you don’t have yet. ## Where does the app start to break? The app breaks when a second person needs the same number, when you want to reach past customers at scale, or when the same questions eat your day. - **Two people, one phone.** Linked devices help, but there is no assignment. Two staff can answer the same customer, or both assume the other did. - **No accountability.** You can’t see who promised what, or how long a customer waited. - **Broadcast lists are small and leaky.** An app list holds up to 256 contacts, and anyone who hasn’t saved your number simply doesn’t receive it. Many buyers never save a shop’s number. - **The same answer, typed all day.** "Price koto?", "Dhakar baire charge koto?", "COD hobe?". Quick replies save keystrokes, but a person still has to read and send each one. - **Orders typed into a sheet.** Name, phone, address, area and total, copied by hand, with typos you discover when the parcel comes back. ## What do I gain with the WhatsApp Business API? With the API you gain a team inbox, automation and template messaging, but you take on Meta’s rules and per-message costs. Here is what changes day to day: 1. **A shared inbox.** Each teammate logs in separately. A chat can be assigned to one person, with internal notes, labels and a history of who did what. 2. **Answers when nobody is online.** Keyword rules handle fixed questions; an AI chatbot can answer from your product list at 1 am or on a Friday. 3. **Templates to past customers.** Order confirmations and delivery reminders go out as utility templates. Eid offers go out as marketing templates to people who opted in, whether or not they saved your number. 4. **Structured orders.** Some platforms collect name, phone, address and delivery area on a form inside WhatsApp, so nobody retypes them. 5. **One place for every channel.** Messenger and Instagram DMs can sit in the same list as WhatsApp. ## What do I give up when I move to the API? You give up free, unlimited free-form messaging and some simplicity. Be clear about these before you switch: - **The 24-hour window.** Free-form messages only work within 24 hours of the customer’s last message. After that, you need an approved template. - **Template approval.** Every template is reviewed by Meta. Plan sale messages days ahead, not the night before. - **Messaging limits.** A new business portfolio can message a limited number of unique customers first in a rolling 24 hours (250 as of October 2026). It grows with verification and good quality. - **Per-message charges.** Meta charges for delivered template messages by category and country. Since 1 October 2026, free-form service replies are also charged after the first 1,000 per number each month. Check Meta’s [pricing page](https://developers.facebook.com/docs/whatsapp/pricing) for current rates. - **A platform bill**, unless your own developers build on the Cloud API. ## Can I keep the WhatsApp Business app after moving to the API? Yes, if your number is eligible for coexistence. Coexistence lets a WhatsApp Business app number connect to Meta’s Cloud API and keep working in the app, with messages synced both ways. The owner can still reply from the phone while the team works the inbox. Two practical points. First, Meta decides eligibility during signup, so you find out when you try to connect. Second, if both the phone and the inbox are active, agree who answers what. Otherwise you have the old two-voices problem with better software. If your number is on personal WhatsApp rather than the Business app, coexistence doesn’t apply. You would remove it from the app and register it on the API, and the old chats stay on the phone. ## When should a Bangladeshi shop switch? A simple test Switch to the API when two or more of these are true for a normal week, not just during a sale: | Question | If yes | |---|---| | Do two or more people answer this number? | Point for the API | | Do you get more chats than one person can answer within 15 minutes? | Point for the API | | Do you message past buyers about offers every month? | Point for the API | | Do customers often wait overnight for a reply? | Point for the API | | Do you take more than 20 orders a day by chat? | Point for the API | | Is your number shared on ads, receipts and packaging? | Point for the API, because it’s worth protecting | Zero or one point? Stay on the app, tidy your quick replies and labels, and check again in three months. Two or more? The time your team spends retyping is already costing more than the software will. ## What should I avoid when switching? Avoid unofficial "WhatsApp API" tools. Anything that links your number by scanning a QR code, or runs WhatsApp Web on a server to send bulk messages, is not Meta’s Business Platform. Those tools can get a number banned, and they can’t send approved templates. A business number on your ads and parcels is too valuable to risk. Also avoid switching on the busiest week of the year. Move a quiet month before Eid or 11.11, so the team learns the new inbox while volume is normal. ## How does SaleMag handle the switch? SaleMag connects a number to Meta’s official Cloud API through embedded signup, with no developer, and supports coexistence so an eligible number stays in the WhatsApp Business app. When someone replies from the app, SaleMag’s AI chatbot stays quiet in that chat for 15 minutes. In the [shared inbox](https://salemag.net/features/shared-inbox), each teammate sees assigned chats, notes and labels, and the composer switches to the template picker once the 24-hour window closes. For the full setup, including what Meta asks for before you connect, read our [WhatsApp Business API guide for Bangladesh](https://salemag.net/blog/whatsapp-business-api-bangladesh-guide). The [24-hour window](https://salemag.net/glossary/24-hour-window) is worth reading before your first template too. ## Next steps Run the test above on last week’s chats. If you score two or more, pick a quiet week and move one number first. Keep the old routine running in parallel for a few days, then turn on the automations once the team trusts the inbox. [Start free](https://salemag.net/register) to connect your number, or [see pricing](https://salemag.net/pricing) for SaleMag plans. ## Steps 1. **Count your chats and people**: For one week, note how many chats arrive per day and how many people reply to them. 2. **List what the app cannot do**: Write down the jobs you do by hand: repeating prices, typing order details, messaging past buyers. 3. **Check coexistence eligibility**: Start the embedded signup in your platform and see whether Meta lets the number stay in the WhatsApp Business app. 4. **Move one number, then test**: Connect the number, send test messages from another phone and keep the old workflow for a few days while the team learns the inbox. ## FAQ ### Is the WhatsApp Business app free? Yes. The WhatsApp Business app is free to download and use for normal chats. Meta has been adding optional paid extras in some markets, but replying to customers from the app does not cost per message. ### Can more than one person use the WhatsApp Business app? Yes, but only in a limited way. The WhatsApp Business app runs on one main phone and a small number of linked devices such as WhatsApp Web, with no assignment, notes or record of who replied. ### Can I use the WhatsApp Business app and the API on the same number? Yes, if the number is eligible for coexistence. Meta lets an eligible WhatsApp Business app number connect to the Cloud API and keep working in the app, with chats synced between the two. ### Is the WhatsApp Business API only for big companies? No. Any business with a Meta business portfolio and a phone number can connect to the WhatsApp Business API, including small Facebook shops, and business verification is not needed to start. ### Will I lose my chat history if I move to the API? It depends on how you move. With coexistence, recent app chat history can sync to the connected platform; if you move a number off the app without coexistence, old chats stay on the phone and do not appear in the new inbox. ### How many contacts can a WhatsApp Business app broadcast reach? A WhatsApp Business app broadcast list holds up to 256 contacts, and only contacts who saved your number receive it. API broadcasts have no list size cap, but Meta limits how many unique customers you can message first per day.