Your intelligent AI phone assistant answers calls around the clock, books appointments and answers questions — for over 15 industries. GDPR-compliant, German servers, unlimited parallel calls.
Reach your customers via phone, video, chat and softphone — with a single intelligent solution.
Answers calls 24/7, books appointments and forwards important conversations.
Personal video conversations with a human-like avatar for consulting and support.
Intelligent assistant for website, WhatsApp and social media — multilingual, 24/7.
Every employee gets their own AI — right in the browser. Hand over & take back with a click.
voiceOne's AI answers incoming calls in under 1 second, understands the request, books appointments directly and routes intelligently. 24/7 with no waiting times, no lunchtime gaps, no missed job.
Response in under 1 second. Traditional phone services need 3–5 rings.
In the calendar, in the CRM, in the practice software — including confirmation SMS.
Recognises responsibility from context and hands over with a briefing — no explaining twice.
DE, EN, FR, ES, IT, TR, RU, AR and more — no surcharge per language.
Everything you need for a professional AI phone assistant.
Your AI answers calls, answers questions and books appointments — 24/7, 365 days a year.
Reduce staffing effort and call centre costs. Focus on your core business.
Instant service with no hold queue. Fast answers and easy appointment booking increase satisfaction.
Appointments are automatically added to your calendar. No double bookings, no manual coordination.
CRM, calendar, ticketing system — voiceOne connects with your existing tools for a smooth workflow.
Detailed analytics on call volume, frequent requests and customer satisfaction help with optimisation.
Outbound campaigns, e-invoicing, DATEV, workflows — four areas each with their own page, comparison against market competitors and concrete use cases.
MultiCall calls your leads, pre-qualifies and books appointments. 3-wave strategy, CRM-integrated, pay-per-call.
Learn moreB2B receipt obligation since 1.1.2025. XRechnung 3.0 + ZUGFeRD 2.3 directly from voiceOne. DATEV export included.
Learn moreOPOS management, receipt export, ELSTER VAT return. Comparison against sevDesk & lexoffice, GoBD-compliant.
Learn moren8n stack with call triggers. 400+ connectors, comparison against Zapier & Make, ready-made templates.
Learn moreAll the features that make voiceOne what it is — each on its own page with comparison table, use cases and transparent pricing logic.
The AI sits as a phone reception in front of your existing systems — without replacing them.
A patient calls — the AI searches for free slots in the practice software and books the appointment directly. Contact capture, time zone handling and confirmation included.
To the practice software connection
CRM, calls, calendar, deals and AI agents — right on iPhone and Android. Installable as a PWA, without an app store download. Real-time sync to desktop and tablet.
The ideal solution for all businesses that want to improve their availability and relieve their team.
From the medical practice to the online shop — voiceOne adapts to your industry.
Appointment booking, prescription requests, customer advice — relieved 24/7, no more missed calls.
Discover industry solutionsDon't miss jobs on the building site. Requests qualified, appointments booked, emergencies forwarded.
For trade businessesComplete shop stack plus AI agent Mia — advises on the phone, in the browser and in chat. Stripe, 6 languages, 14 days to go-live.
Discover AI ShopThe CRM that knows every call. Contacts, pipelines, tasks — fully included in the plan, without per-user pricing like HubSpot & co.
Discover AI CRMSetup in under an hour — with no technical knowledge at all.
Configure greetings, answers and routing rules in just a few minutes.
A customer calls — the AI answers with your individual greeting.
Answer questions, book appointments, take information or route to the right place.
Notification of calls, appointments and important info via email or app.
60-second overview — and a live example of human-like conversations with the most natural German AI voice.
Find out why over 500 businesses trust our AI phone assistant.
Test the most natural German AI voice — developed for perfect conversations.
Get called instantly — or listen to ready-made sample conversations from real industries.
Over 500 businesses already trust voiceOne.
“Since we started using voiceOne, our practice team is noticeably relieved. The phone no longer rings off the hook, and patients can still book appointments.”
“Setup was super easy and the customer service is top-notch. We save an enormous amount of time on scheduling for our beauty salon.”
“Finally a solution that also works for trade businesses! Our customers always reach us, even when we are on the building site.”
Find out how much time and money you can save with voiceOne.
The complete voiceOne platform — AI phone assistant, agent softphone, CRM, workflow automation — installed in your own infrastructure. Your own PostgreSQL, your own SIP telephony, optionally fully air-gapped.
HIS connection HL7/FHIR, TI security zone, § 75c SGB V. Patient data never leaves your premises.
§ 203 StGB-compliant, client confidentiality maintained. Own LLMs on your own network, no external API calls.
BSI C5, ISO 27001-ready, KRITIS-capable. Citizen service with data sovereignty to EU standard.
Become a voiceOne partner and earn up to 35% revenue share — for life, as long as your customer stays active. Recommend or resell as a reseller. Start for free, track earnings live in the dashboard.
The only AI phone assistant with a completely free, unlimited trial — and the lowest entry price on the market.
Start in 15 minutes — free and no obligation.