When businesses first start using WhatsApp, most start with the free Business app. At some point it stops being enough. The question is: when exactly should you switch to the API?
The Quick Decision Rule
- Under ~50 conversations/day and you work alone? Stick with the free Business app.
- Multiple people need to reply, or you want automation or broadcasts? You need the API.
WhatsApp Business App (Free) — Key Limitations
- One phone number = one device (up to 4 linked devices for read-only)
- Broadcasts limited to 256 contacts, only to people who have your number saved
- No automation API — no CRM integration, no triggered messages, no chatbot
- No assignment or routing — no way to assign chats to specific team members
WhatsApp Business API — What You Unlock
- Unlimited agents on one number — your whole team replies from a single WhatsApp number
- Broadcasts to unlimited contacts — using Meta-approved templates, no 256-contact cap
- Automation and chatbots — trigger messages based on events (order placed, form submitted)
- CRM integration — connect to HubSpot, Salesforce, Shopify, or custom systems via API
- WhatsApp Flows — native interactive forms inside the chat
Side-by-Side
| Feature | Business App | Business API |
|---|---|---|
| Cost | Free | Meta fees + platform fee |
| Agents on one number | 1 (+4 linked, read-only) | Unlimited |
| Broadcast limit | 256 contacts | Unlimited |
| Message automation | Auto-reply only (basic) | Full trigger-based automation |
| CRM / Shopify integration | ✗ | ✓ |
| Analytics | Basic | Full campaign + team analytics |
What Does the API Actually Cost?
The API itself is free from Meta. You pay a monthly platform fee (Tenreply starts at ₹1,999/month) plus Meta's per-message fees (~₹0.78 per marketing message to Indian numbers). Inbound messages and service replies are free.
Use the WhatsApp ROI Calculator to see if the switch makes financial sense for your volume. See Tenreply's plans and set up the API in under 10 minutes →