Your phone
always picks up.
Call0 — the AI phone assistant that sounds human.
Answers every call.
Around the clock.
Answers questions, books appointments, replies on WhatsApp & email — set up in 2 minutes, GDPR-compliant.
Talk to Call0 live — right here in your browser.
Allow the microphone and start talking. No sign-up.
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One agent.
Every channel. One cockpit.
On the phone
Answers every call, handles questions and books appointments — with a voice that sounds human.
On WhatsApp & email
Replies with the same knowledge on messages and mail — and logs what matters, automatically.
Guten Tag, David
Alles ruhig — dein Agent hat heute 47 Anrufe angenommen.
Anrufe heute
47
Antwortzeit
0:51
Termine gebucht
12
Zufriedenheit
4,8
Frau Weber
Termin auf 14:30 verschoben
Jonas K.
WhatsApp · Öffnungszeiten
Neu gebucht
Do 16:00 · Beratung
Phone
Reception, questions, bookings — live in the call.
Do you have an appointment free tomorrow?
Yes — 2:30pm or 4:00pm. Which works better?
2:30pm please.
Booked ✓ You will get a confirmation via SMS.
Replies to messages — with the same knowledge.
Reads requests, replies and creates tasks.
Büro Hartmann
Callback requested
Jonas K.
Quote for March?
Frau Weber
Move appointment
Connected to
your tools.
Appointments, contacts and notes land straight in your systems — via 100+ integrations. No more retyping.
Google Kalender
Gmail
Outlook
HubSpot
Salesforce
Slack
Notion
ZoomGoogle KalenderGmailOutlookHubSpotSalesforceSlackNotionZoom
Stripe
Shopify
Calendly
Airtable
Pipedrive
Asana
Trello
WhatsAppStripeShopifyCalendlyAirtablePipedriveAsanaTrelloWhatsAppReady in two minutes.
Create your assistant
Tell Call0 about your business — or simply import your website. Knowledge, greeting and behavior are set up automatically.
Connect a number
Get a new number in seconds or connect your existing one. WhatsApp and email optional.
Lean back
Call0 picks up, answers, books and logs everything. You see every conversation in the cockpit.
24/7
available
0:51
median response time
2 min
to your first call
DSGVO
GDPR-compliant, DPA included
Ready to never miss
a call again?
Start in minutes — 3 days free, no card required.