The short answer
Start with the free WhatsApp Business app if one or two people handle your chats and you get a manageable number of messages. Move to the WhatsApp Business Platform (often called the API) when you need automatic replies that actually complete tasks, like checking availability and taking bookings, or when several staff members must handle chats at the same time.
Side-by-side comparison
| WhatsApp Business app | WhatsApp Business Platform (API) | |
|---|---|---|
| Cost | Free | Meta charges per message for certain message types, plus the cost of the software or provider you use |
| Setup | A few minutes on your phone | Meta Business account, verification and display name approval |
| Automation | Greeting message, away message, quick replies, catalogue | Full chatbots: availability checks, payment links, confirmations, reminders, integrations |
| Team | Your phone plus a limited number of linked devices | A shared inbox for many staff members |
| Messaging many customers | Broadcast lists, which reach only people who have saved your number | Approved template messages to customers who have opted in |
| Best for | Small shops, freelancers, new businesses | Hotels, institutes and businesses with many enquiries |
Signs you have outgrown the app
- Customers wait hours for a reply, especially at night or on busy days.
- Your staff answer the same questions about price, availability and location again and again.
- Several people need to reply from the same business number.
- You want bookings and payments to happen inside the chat automatically.
- You want to send reminders or offers to past customers who agreed to receive them.
A warning about unofficial "WhatsApp tools"
Bulk-sender apps and modified WhatsApp versions promise cheap mass messaging. They break WhatsApp's terms and can get your number restricted or permanently banned, often at the worst possible time, such as during a festival season. Only use the official app or the official WhatsApp Business Platform.
What a booking bot on the Platform looks like
For a hotel, a typical conversation runs like this: the guest asks for a room, the bot shows what is available for those dates, sends a UPI payment link for the advance, and confirms the booking the moment payment succeeds. The owner gets an alert on their phone. Staff can take over the chat at any point.
Can I keep my existing number?
Usually yes. A number used on the WhatsApp Business app can be moved to the Platform. Meta also offers ways to keep using the app alongside the Platform on some numbers. Check the current options for your number before you switch, and back up your chats first.
Frequently asked questions
Is the WhatsApp Business API free?
No. The software and setup cost money, and Meta charges for certain types of messages. Replies to customers who message you first are usually much cheaper than marketing messages you start.
Do I get the green tick with the API?
Not automatically. Verification badges are granted by Meta separately and depend on eligibility.
Can a WhatsApp bot reply in Hindi?
Yes. A well-built bot can understand and reply in Hindi, English and Hinglish.
See how a WhatsApp booking bot works for hotels and dharamshalas.