Alternative

Doctolib KI-Telefonassistent and Call0 in a fact comparison

The address aaron.ai redirects to the page of Doctolib’s AI phone assistant, which is built for calls in medical practices. Call0 is an AI phone assistant for small and medium-sized businesses in all industries, practices included.

As of 16 October 2026

What Doctolib KI-Telefonassistent publishes

The facts side by side

Information from the providers on the linked pages. As of 16 October 2026
FeatureDoctolib KI-TelefonassistentCall0
Focus according to the provider
AI phone assistant for calls in medical practicesSource: info.doctolib.de
AI phone assistant for small and medium-sized businesses; the agent is created from the company’s own websiteSource: call0.ai
Entry price and what it includes
not stated publiclySource: info.doctolib.de
Launch: €110 per month or €1,188 per year; 700 minutes, 3 concurrent calls; netSource: call0.ai
Free trial
not stated publiclySource: info.doctolib.de
Yes, 15 test minutes without a credit card; no phone number in the Free planSource: call0.ai
German
Website in GermanSource: info.doctolib.de
Website and product in German; 13 agent languagesSource: call0.ai
How to start
Consultation call via a contact formSource: info.doctolib.de
Sign up online; Enterprise on requestSource: call0.ai
Phone number
not stated publiclySource: info.doctolib.de
1 number included in the Launch plan; each additional one €15 per month; forwarding your own number requires a paid planSource: call0.ai
Integrations named
not stated publiclySource: info.doctolib.de
Over 500 in the directory, including calendars, CRM and ticketing systems; WhatsApp is under maintenanceSource: call0.ai
Provider’s registered seat
Doctolib GmbH, Berlin, GermanySource: doctolib.de
Call0 Inc., New York, USASource: call0.ai

Call0 at a glance

Setup
You enter your website address. Call0 prepares the assistant from it and calls you for a test.
Plan
Launch costs €110 per month or €1,188 per year and includes 700 minutes, 3 concurrent calls and 1 phone number. Each additional minute costs €0.16.
Trial
15 test minutes in the browser, without a credit card.
Languages
The agent speaks 13 languages.
Integrations
Over 500 integrations in the directory, including calendars, CRM and ticketing systems.

What you should know about Call0

  • The provider is a US company: Call0 Inc., New York.
  • Data is not processed exclusively in the EU. The privacy policy names Ireland, the USA and worldwide processing, among others.
  • WhatsApp is under maintenance and cannot currently be activated.
  • Contracts are available to business customers only.
  • The Free plan does not include a phone number.

Stay with Doctolib KI-Telefonassistent if …

  • your practice already uses Doctolib for appointments
  • you are looking for an assistant aimed exclusively at medical practices
  • you prefer to plan the rollout in a consultation

Choose Call0 if …

  • you want to start online today without a sales call
  • the assistant should be created from your website
  • 3 concurrent calls should be included from the entry plan (Launch) onwards
  • besides the phone, you also want to use a chatbot or an email assistant from the same provider

What matters when you switch

Concurrent calls
If several callers should get through at the same time, a plan with one line does not help, however low its price.
Term and setup fee
For a pilot, a plan that can be cancelled monthly is usually the simpler choice.
Keeping your number
Forwarding when the line is busy or outside opening hours is usually the easiest start; porting is rarely needed.
Data
Ask where the language model and transcripts are processed, how long they are stored and whether there is a data processing agreement.

More alternatives to Doctolib KI-Telefonassistent

According to each provider’s own focus, with sources in the provider comparison.

  • HalloPetra – Best for: Trade businesses that want to hand over calls by call forwarding
  • Ordicall – Best for: Medical practices, MVZ and clinics that want a guided setup
  • fonio – Best for: Businesses in German-speaking countries looking for fixed minute packages and a provider in the EU
  • Placetel AI – Best for: Businesses that already use a phone system and want to add the assistant
  • voiceOne – Best for: Small businesses, practices and law firms that want to set up online themselves
  • Audelia – Best for: Businesses that want to combine AI with a human phone team

All providers compared

Frequently asked questions

What happened to aaron.ai?

Doctolib acquired Aaron.ai. The address aaron.ai now redirects to the page of Doctolib’s AI phone assistant; Doctolib does not state prices there.

Can Call0 book appointments for a medical practice?

Yes, in the connected calendar. Whether your practice software can be connected is shown in the Call0 integration directory.

In detail in the blog: Arztpraxis: Anbieter im Vergleich (in German)

Read on: All providers compared · Costs at a glance · Facts about Call0

As of 16 October 2026. Call0 is itself one of the providers named. All information comes from the linked pages of the providers and was checked on the date stated; the page of the respective provider is authoritative. No products were tested and no ratings were given. Brand names belong to their owners; no partnership is claimed. If an item is no longer correct, write to support@call0.ai.

    aaron.ai alternative: Doctolib KI-Telefonassistent vs Call0