- The free WhatsApp Business app suits a small business with one or two people answering from one phone.
- The official WhatsApp API suits companies: unlimited agents on one number, auto-assignment, approved-template campaigns, chatbots, integrations and reports.
- API cost = platform subscription (on Klamna SAR 149/month incl. 1 user and 1 number) + Meta conversation fees by category.
Most companies start with the WhatsApp Business app on one phone. As customers grow, problems follow: lost chats, one phone passed between staff, and no reporting. This guide explains the real difference between the app and the WhatsApp API, what it costs and when to switch.
The WhatsApp Business app
A free Meta app for small businesses: business profile, greeting and away messages, quick replies and a simple catalog. It is built around one phone and one person, even with a few linked devices. There is no routing, no permissions and no record of who answered whom.
The official WhatsApp API
The WhatsApp API is Meta's platform for mid-size and large businesses. It is activated on your number by a Meta Business Partner such as Etisalna and connected to a platform like the Klamna shared inbox, where your whole team replies.
Side-by-side comparison
| Item | Business app | Official API |
|---|---|---|
| Agents | One phone, few linked devices | Unlimited agents on one number |
| Routing | Manual | Automatic assignment by availability or team |
| Campaigns | Limited broadcast lists, ban risk | Approved-template campaigns at scale |
| Chatbot & AI | Basic auto-replies | Full flow builder and AI assistant |
| Integrations | None | CRM, online stores, REST API |
| Reports | Almost none | Response times, agent performance, CSAT |
| Green tick | Not in the same way | Eligible accounts can apply |
| Cost | Free | Platform subscription + Meta fees |
How much does the WhatsApp API cost?
- Platform subscription: on Klamna, WhatsApp & inbox is SAR 149/month including one user and one WhatsApp number; each extra user SAR 59; extra WhatsApp number SAR 99.
- Meta conversation fees by category (marketing, utility, authentication, service). Customer-initiated service conversations have free tiers under Meta's rules. Meta prices change, so we share the current table on request.
Example: 4 agents on one number = 149 + 3 × 59 = SAR 326/month for the platform, plus Meta fees. Prices are in SAR and exclude VAT; yearly plans include two months free. See pricing.
When should you switch?
- More than two people answer customers.
- Chats get lost or replies are slow.
- You need reminders, offers or order alerts at scale.
- You want a bot after hours or appointment booking.
- You need CRM or Salla/Zid integration and real reports.
Steps to move to the API
- Prepare and verify your Meta Business account.
- Choose the number: your current one (released from the app), a new one, or your 9200 unified number.
- Activation by a Meta partner and profile setup.
- Teams, routing rules, canned replies and files library.
- Chatbot and approved templates.
- Training and go-live.
Common mistakes when switching
- Copying the chaos: define teams (sales, support, billing) and routing rules from day one instead of letting everyone see everything.
- An over-long bot: start with three or four clear options and always keep a "talk to an agent" button.
- Campaigns without opt-in: messaging old lists that never agreed raises reports and lowers your number's quality rating, even on the API.
- Marketing templates for everything: order confirmations and appointment reminders belong in utility templates.
- Ignoring reports: review first-response time and unanswered chats weekly and adjust staffing.
The bottom line
If your business is small and one person handles a few chats a day, the free app does the job. Once WhatsApp becomes a main channel for sales and service, the difference is the difference between a phone and a system: a whole team on one number, compliant campaigns, a bot and real reports. If you are comparing vendors, read how to choose a WhatsApp API provider.
FAQ
Can one number run on both the app and the API?
No. A number is either on the app or on the API.
Is there a mobile app for the API?
Agents use Klamna in the browser, the Android app or the Windows/Mac desktop app; the iPhone app is coming soon.
Do I get the green tick automatically?
No. Meta decides based on brand notability. See our green tick guide.
Does the API prevent bans?
It is the compliant way to message at scale, but you must follow Meta policies: approved templates, opt-in and useful content.
Ready to move to the official API? Talk to us or WhatsApp 966920031338 and we will activate it step by step.