WhatsApp Business app vs. API: which does your school need?
Short answer: the WhatsApp Business app is free and enough if one or two people reply by hand to a few contacts. The WhatsApp Business API (Meta's Cloud API) is what you need to automate replies, connect your CRM, use AI agents and message hundreds or thousands of leads; in exchange, Meta charges per message: in Spain, €0.0585 for a marketing template and €0.0166 for a utility template or a reply, with 1,000 free replies a month. ReshapeOS connects to the API as a Meta Tech Provider.
In Spain, WhatsApp reaches 94% of social media users every month, and 97% of them use it daily (IAB Spain, 2026). The question isn't whether your school should be on WhatsApp, but with which tool.
What the WhatsApp Business app is
It's Meta's free app for small businesses, on your phone and linked devices. It includes:
- Business profile with hours, address and website
- Greeting and away messages, plus quick replies
- Labels to organize chats
- Product or service catalog
- Broadcast lists
Its limits show up as soon as volume grows:
- Limited broadcasting: each list holds up to 256 recipients, and the message only reaches people who have saved your number
- Few devices: the number runs on the main phone and a limited number of linked devices
- No official CRM integration and no automation beyond the preset messages
- Everything is manual: if nobody replies, the lead waits
Meta is adding paid features to the app: in September 2026 it announced Meta One, a business subscription with more linked devices and broadcast credits, which is rolling out gradually by country.
What the WhatsApp Business API is
It's Meta's platform for businesses that need to integrate WhatsApp into their systems. Since Meta shut down the On-Premises version in October 2025, businesses use the Cloud API, hosted by Meta, either directly or through a technology provider.
What it enables:
- Automate replies with AI agents, 24/7
- Connect your CRM: every conversation is logged on the lead's record
- Message first to leads who have given consent, using Meta-approved templates (marketing, utility or authentication)
- Scale: several people and agents handle the same number, with no device limit
- Blue badge (official business account), which Meta grants to verified businesses with at least 30 days on the platform
To use it you need a Meta business portfolio (Business Manager), a phone number and a display name that Meta reviews. Verifying your business lets you add more numbers and raise your sending limits.
The 24-hour window
Every time a lead messages you, a 24-hour customer service window opens in which you can reply freely. Outside it, you can only write using approved templates.
Differences at a glance
| WhatsApp Business app | WhatsApp Business API | |
|---|---|---|
| Price | Free (optional subscriptions) | Per message sent |
| Who replies | People, by hand | People and AI agents |
| CRM integration | Not official | Yes |
| Bulk messaging | Lists of up to 256 contacts who saved your number | Templates to any consenting lead, within your messaging limit |
| Simultaneous users | Phone and a few linked devices | Unlimited |
| Automation | Greeting, away and quick replies | Full |
| Blue badge | No | Yes, if you meet the requirements |
How much the WhatsApp Business API costs in Spain (2026)
Meta charges per delivered message by category. Rates for Spanish numbers since 1 October 2026:
| Message type | Price per message |
|---|---|
| Marketing template | €0.0585 |
| Utility template | €0.0166 |
| Authentication template | €0.0166 |
| Reply within 24 h (service) | €0.0166, with 1,000 free per number per month |
| Messages the lead sends you | Free |
On top of that, if the lead messages you from a click-to-WhatsApp ad and you reply in time, Meta opens a free entry point window of up to 7 days in which no messages are charged. More detail in WhatsApp Business API pricing in Spain.
Can I use the same number in the app and the API?
Yes, with Meta's coexistence feature. It's enabled through a technology provider and lets you keep using the app on your phone while the API automates. One-to-one chats from the last 6 months are synced, but there are limitations: groups don't sync, broadcast lists and disappearing messages are disabled, and sending is capped at 20 messages per second.
If you'd rather move the number entirely to the API, you have to delete the app account, along with its chat history.
Which to choose for your institution
The app is enough if…
- You get few inquiries a day and someone is always available to reply
- You don't need conversations logged in the CRM
- You don't run campaigns to leads
You need the API if…
- You get leads from forms, ads or events and want to contact them within minutes
- You want to reply after hours and at weekends
- You run follow-up campaigns, interview reminders or cold-lead reactivation
- Several people on the admissions team handle the same number
Most business schools, universities and vocational colleges with active recruitment fall into the second group.
How ReshapeOS helps
ReshapeOS is a Meta Tech Provider: we connect your number to the official WhatsApp Business API using Meta's flow and get it running with AI agents configured by our team.
- The agent replies to every lead instantly, including nights and weekends
- It answers questions about programs, fees and deadlines with your information
- It qualifies and books the admissions interview
- It sends reminders to reduce no-shows
- It combines WhatsApp with calls: if the lead doesn't reply, the agent calls them
- Everything lands in your CRM
The WhatsApp only plan costs €280/month (excluding VAT) and includes unlimited WhatsApp agents and 300 WhatsApp sessions a month; with calls, the Phone + WhatsApp plan costs €480/month. See the details on the pricing page.
Frequently asked questions
Is the WhatsApp Business app free?
Yes. Meta also offers optional subscriptions with extra features, such as Meta One, which has been rolling out by country since September 2026.
How much does the WhatsApp Business API cost in Spain?
Meta charges per message: €0.0585 for a marketing template and €0.0166 for a utility or authentication template or a reply within 24 hours, with 1,000 free replies per number per month. Messages sent by the lead are free.
Can I connect the WhatsApp Business app to my CRM?
Not officially. To integrate WhatsApp with a CRM you need the API, either directly or through coexistence.
Can I send bulk messages with the app?
Only with broadcast lists of up to 256 contacts, and the message only reaches people who have saved your number. For campaigns to leads you need the API and approved templates.
Do I lose my number if I move to the API?
No. You can migrate it to the API (losing the app's chat history) or use coexistence to keep the app and the API on the same number.
Sources
- WhatsApp Business: app features
- WhatsApp: broadcast lists
- Meta: introducing Meta One (September 2026)
- Meta: On-Premises API sunset
- Meta: WhatsApp Business Platform pricing
- Meta: official business accounts
- Meta: coexistence with the WhatsApp Business app
- Meta: migrate an existing number
- IAB Spain: Social Media Study 2026
Try an agent