How to add a call button to your business app

In a business app, a call button saves the most time on lists: tap a customer, student, patient or supplier and their phone rings, without searching your contacts. In an app for customers, a call button reaches your shop in one tap.

Updated 2026-11-09

Two uses of a call button

In an app for you and your staff, a call button sits next to each person in a list: students and parents in a coaching app, customers with pending udhaar in a khata app, patients in a clinic app, workers on a site app. Tapping it opens the phone's dialler with that number ready.

In an app for customers, a call button reaches you: "Call the salon", "Call for delivery", "Call the doctor's desk". Put it on the home screen and next to booking or order screens.

Where call buttons help most

Next to each pending payment, with a WhatsApp reminder button beside it
On a student's screen: separate buttons for the student and the parent
On each delivery or service visit in today's list
On a customer's detail screen, with their history below
On the home screen of a customer app, with your calling hours

Keep numbers clean

Store numbers as 10 digits without spaces, dashes or a leading 0
Ask AppCub to check the number when it is typed, so wrong lengths are caught
Keep a second number field for parents, guardians or alternate contacts
For staff phones, decide whether staff should see customers' numbers at all

What the button does not do

The button opens the dialler; the call itself is an ordinary phone call from that phone, using its SIM. The app does not record calls, does not log the call's length, and cannot call many people automatically. If you want a record, ask for a "Called" button that saves the date and a note after you hang up.

Privacy

Customers' numbers are personal data. Show them only to the people who need them. If staff use the app on their own phones with a shared Supabase database, ask for sign-in and decide which screens each person sees.

With AppCub

Ask, for example: "On every student row, add Call Student and Call Parent buttons and a WhatsApp button. After a call, let me add a note with the date." AppCub shows it in the plan, builds it and runs the app next to the chat. Scan the QR code to install it and try a call.

Questions

Can my app call a customer in one tap?

Yes. A call button opens the phone's dialler with the number ready; the call is an ordinary phone call.

Can the app record calls?

No. It opens the dialler only. You can add a note after each call to keep a record.

Does the call button work in the web link version?

On a phone browser it opens the dialler. On a computer it may not, so the number is also shown.

Can I call many customers automatically?

No. The app does not make automatic calls. A list with call buttons lets you go through them quickly.

Can I hide numbers from staff?

With sign-in from your Supabase database, you can ask for screens that do not show numbers to some staff.

Should I add a WhatsApp button next to the call button?

Usually yes. Some customers do not pick up calls but read WhatsApp.

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