Create your Call.io business account
- iOS 16+ and Android 10+
- Start with your business details and contact number
How Your Phone Assistant Works
Call.io answers the calls you can't, understands what the caller needs, and handles the conversation the way you set it. Every call lands in the app as a transcript with the details you need.
A CUSTOMER CALL
See How Call.io Handles a Customer Call
Your team is busy serving customers. Call.io picks up, understands what the caller needs, and takes the right next step without making them wait.
9:41
Assistant Dialogue
Esther Howard
+1 354 678 88 88
Live Call00:32
- Call.io
Willow & Stone, how can I help?
- Caller
Hi, I'd like to book a table for tomorrow evening.
- Call.io
Of course. How many people will it be for?
- Caller
Four. Is 8:00 PM available?
- Call.io
8:00 PM is open. Could I take your name?
How it knew what to do
Call.io uses the business information and call rules you provide to answer customers consistently.
"We take reservations every day from 12:00 to 22:00. For groups over 6, ask for a phone number."
- A customer called while your team was busy.I answered immediately and asked how I could help.
- They want to make a reservationI already know your hours and reservation rules.
- They want a table for tomorrow evening.I confirm the details while they are still on the line.
- So I handled the request for your businessYour team can review the call and summary afterward.
SETUP
How to Set Up Your AI Call Assistant
Get your business assistant ready in minutes. Keep your existing number and decide exactly how Call.io should handle customer calls.
Get a dedicated assistant number for your business
- Your assistant number is ready to receive customer calls as soon as setup is complete.
- Choose whether Call.io answers all calls or only the ones your team misses.
Teach Call.io how your business works
- Set the greeting and the assistant voice
- Add hours, location, services, prices, and business rules
Stay in control of every live customer call
- Monitor live calls when needed without interrupting the conversation.
- Step in, take over, or end the call whenever your team needs to.
Review every customer conversation
- See who called, what they asked, and how the conversation went.
- Read transcripts and summaries in seconds, without replaying the entire call.
Never let another customer call go unanswered
Set up your business assistant and start answering customer calls 24/7.
FAQ
No. You can keep your existing business number. Call.io gives your business a dedicated assistant number, and you can also forward unanswered calls from your current line whenever you want.
Yes. While the assistant is on a call your team can listen in without the caller hearing them, join the conversation, or end the call — all from the app.
Every caller is answered. The assistant is not a single line waiting its turn, so nobody is left on hold while another conversation finishes.
Yes. Tell the assistant your hours and the rules around them — group sizes, notice periods, what to ask for — and it collects the details on the call and passes them to your team.
From what you enter during setup: your hours, location, services, prices, and the call rules you write in your own words. Change any of them and the next call follows the new rule.
Yes. The questions your team answers all day — opening hours, address, parking, what you offer — are answered from your business information, consistently and in the caller's language.
Every call lands in the app as a transcript and a summary, so your team can catch up in seconds instead of replaying the recording.
A REAL CALL
See How Call.io Handles a Call for You
You are busy and your phone is on silent. Call.io answers, understands what the caller needs, and handles the conversation based on your preferences.
9:41
Assistant Dialogue
Delivery
+1 354 678 88 88
Live Call00:32
- Call.io
Hello, it’s Dana’s personal assistant. How can I help you?
- Caller
Hi, I've got a delivery here. I'm at the door but no one's answering.
- Call.io
Dana isn't home right now. Could you leave it with the neighbor at number 12?
- Caller
Sure, I'll drop it there.
- Call.io
Thank you. I'll let her know right away.
How it knew what to do
Your assistant uses the details and call rules you have already shared to respond the way you want.
"If a delivery shows up while I'm at work, ask them to leave it with my neighbor at number 12."
- An unknown number called when she was busy.I picked up to find out what they needed.
- It's a delivery.She's already told me what to do about those.
- He's standing at her door right now.This needs an answer now, not later.
- So I handled the call for her.I already knew what she wanted me to do.
SETUP
Set Up Your Personal Phone Assistant
It takes just a couple of minutes. Keep your own number and carrier, then choose when your assistant should answer for you.
Download Call.io and create your account
- iOS 16+ and Android 10+
- Try it before you decide — no card required
Get your own assistant number
- Your assistant number is ready to use as soon as setup is complete.
- Choose whether it answers every call or only the ones you miss.
Tell your assistant how to handle your calls
- Choose the voice and write the greeting in your own words
- Add personal preferences and rules for different callers
Listen in live and step in whenever you want
- Listen quietly while the call is happening — the caller will not hear you.
- Take over the call or end it with one tap.
See exactly what was said
- Read the full conversation and see both sides in order.
- Use the transcript and summary to catch up in seconds.
Let your assistant handle the next call
Download Call.io, verify your number, and set your first call rule in minutes.
FAQ
No. Call.io gives you an assistant number on top of the number you already have — same SIM, same carrier, same contacts. Share the assistant number with whoever you'd rather not give your personal one to. If you also want your assistant answering the calls you miss on your own line, that's a one-tap setup you can undo at any time.
Yes. You can listen in while the call is happening without the caller hearing you, and take over or end the call with one tap.
They are answered rather than missed. Each one arrives in the app as a transcript and a summary, so you can read what was wanted instead of guessing from a missed-call log.
Yes. Tell your assistant who to call and what to ask, and it makes the call and brings the answer back to you.
From the rules you write in your own words — who matters, what counts as urgent, what to say to everyone else. Change a rule and the next call follows it.
It handles them so you don't have to. They never ring your phone, and you can see what was said if you want to.
Yes. Your assistant answers on its own number, so it keeps picking up whether or not your phone is reachable.