WhatsApp Automation
WhatsApp Business app vs API, which does my store need?
Direct answer
The free WhatsApp Business app works for a store doing a handful of orders a day with one person replying. The moment you need automation, multiple team members, or integration with Shopify, you need the WhatsApp Business API, which is what tools like ReplAi are built on.
The practical difference
| Business app | Business API | |
|---|---|---|
| Cost | Free | Conversation-based pricing, usually bundled by your tool |
| Who replies | You, on a phone | Software, agents, or AI |
| Automation | Away messages only | Full flows: confirmations, reminders, tracking updates |
| Shopify integration | None | Real-time triggers on orders and carts |
| Team access | One device (plus limited linked devices) | Unlimited, with roles |
| Green badge verification | No | Available |
When the app stops being enough
The breaking point is usually volume plus timing. Confirmations must go out within minutes around the clock, and a phone in someone's pocket cannot do that. If orders arrive while you sleep, or two people fight over one phone to answer customers, you have outgrown the app.
What moving to the API looks like
You do not build against the API yourself; a platform handles hosting, templates, and compliance. With ReplAi, the setup is part of onboarding: connect your number, install the Shopify app, and confirmations plus customer support run automatically. Most merchants are live in about 10 minutes, and your existing WhatsApp number can usually be migrated rather than replaced.
Last updated 2026-07-09