• How it works
  • The app
  • Specialties
  • Price
  • For practices
    •  Get the appGet it DE

    Seen sooner.
    No phone call.

    Open times, released by the practice.
    Often confirmed at once.

    Coming soon to the App Store How it works

    Free. No ads. Sorted by time.

    Real app screens in German, with sample data.

    How it works

    Open it.
    Pick a time.
    Done.

    No phone call, no hold music. From the search to the appointment.

    01

    Say what you need

    A specialty, a complaint, or the spot that hurts.

    In detail

    Say what you need

    • Write it the way you would say it: “skin” finds Dermatology and Skin check.
    • Some specialties sit in several areas: Allergology, for example, under “Skin”, “Ears, nose and throat” and “Lungs and breathing”.
    • Searching needs no account.

    02

    See open times

    The times that practices release themselves. Anything booked through Calenu disappears at once.

    In detail

    See open times

    • Some times a practice releases only for new or only for existing patients.
    • Each time says whether you are booked at once or send a request.
    • 84 percent of those who book online, or could imagine doing so, name not being tied to phone hours as an advantage (Bitkom Research, 2025).

    03

    The practice, before you book

    Its next times, how it confirms and, if the practice states it, what canceling costs.

    In detail

    The practice, before you book

    • Under “Confirmation” the page says whether the practice confirms at once or answers each request itself.
    • Under “Written by the practice” the practice tells you about itself.
    • The languages spoken at the practice are listed under its name.

    04

    Pick a time

    Enter your details once, then never again.

    In detail

    Pick a time

    • “Suggestions” lists the next open times. “Calendar” lets you pick a day.
    • For a request, the app says “Waiting for the practice” until the practice confirms.
    • If you like, the confirmation also comes by email to your account’s address, with a file for your calendar.
    • Reminders come only if you allow them.

    05

    Done

    The appointment is in the app, with directions to the practice, your calendar and what to bring.

    In detail

    Done

    • “Running late” tells the practice, with no phone call. You see when the front desk has read it.
    • “Directions” gives your maps app only the practice’s address.

    The film

    A morning with Murat and Emir.

    A nearly forgotten check-up. A father, a son and an appointment without a phone call.

    Under a minute. Everyone in it is made up.

    The story

    Outside the pediatric practice, Murat remembers that Emir is due for his check-up. He requests a time in Calenu, the practice says yes, and the next morning it is Emir’s turn.

    A still from the film: Murat bends down to Emir and they high-five.

    The app

    How to be seen sooner.

    Five things you would otherwise call about.

    Someone cancels.
    Calenu tells you.

    You keep your appointment six weeks out. Calenu watches the practice and lets you know as soon as something earlier opens up.

    Calenunow

    An earlier appointment opened up. Tomorrow at 09:40. Tap to see where.

    In detail

    Someone cancels. Calenu tells you.

    • One tap on “Tell me if an earlier slot opens” is all it takes.
    • Your old appointment stays until the new one is confirmed.
    • The five who have waited longest hear first, everyone else two minutes later. If the time starts in less than two hours, everyone hears at once. Plus changes nothing about that.

    Sorted by time

    The soonest appointment is at the top. You can also sort by distance.

    In detail

    Sorted by time

    • Each row shows the time and, where known, how far away the practice is.

    and are marked

    At all the others, your health insurer pays as usual for what it covers.

    In detail

    Private-only practices and self-pay services

    • The mark is on the time itself, before you tap.
    • If you have statutory insurance, Calenu offers you only times that are open to you.
    • Before you book, the app says who pays, such as “Privatpraxis, you get an invoice” or “You pay for this one yourself”.

    Calu, when you are not sure

    Which specialty, which documents, who pays. No diagnosis.

    In detail

    Calu, when you are not sure

    • Calu shows you which specialty fits, what to bring and who pays.
    • We never save what you write to Calu.
    • Certain words bring up an emergency card with 112 and 116117. In the blind test it appeared for 79 of 150 emergency sentences (Calu’s rules).

    Cancel without calling

    Two taps and done. The time is free again at once for others.

    In detail

    Cancel without calling

    • Anyone waiting for an earlier appointment at that practice hears about the freed time.
    • In a 2023 survey by the KBV, the national association of statutory health insurance physicians, 70 percent of the practices asked had problems with appointments missed without notice (zm, 2023).

    Figures

    The appointments are there.

    And still many people wait for weeks. Four figures from Germany, each with a source.

    1.4 million

    appointments nobody asked for at the in 2025

    Practices had reported them there. The figure does not say whether they were given out some other way.

    Zentralinstitut für die kassenärztliche Versorgung (Zi), chart of the month, February 27, 2026

    In detail

    How it was gathered

    • A special analysis by the Zi, the research institute of the statutory health insurance physicians, of the 116117 appointment service’s data for 2025.
    • It counts appointments that practices had reported to the service.

    What the data shows

    • 1.84 million appointments were arranged and not canceled again.
    • More than 1.4 million reported appointments went unrequested there.
    • The average wait was 8.6 days. 91 percent of insured people got their appointment in less than 28 days.

    Source Zentralinstitut für die kassenärztliche Versorgung, February 27, 2026.

    42 days

    Average wait for a specialist appointment

    For people with statutory insurance who had to wait at least a day. In 2019 it was 33 days. Counting those seen the same day, the average in 2024 was 36 days.

    Survey of insured people by the Bewertungsausschuss, in the federal government’s answer of January 28, 2026, Bundestag paper 21/3858, question 19

    In detail

    How it was gathered

    • A survey of people with statutory insurance that the Bewertungsausschuss, the committee of doctors and insurers that values medical services, submitted to the health ministry. It compares 2019 with 2024.
    • Cited in the federal government’s answer to a parliamentary question. The answer does not give the survey’s size or method.

    What the data shows

    • Those who waited at least a day: 33 days on average in 2019, 42 days in 2024.
    • With same-day appointments: 36 days in 2024.
    • Through the appointment service centers, the average wait in 2024 was eleven days, counted from the first attempt to arrange one.

    Source Bundestag paper 21/3858, January 28, 2026, questions 10 and 19.

    56 percent

    of people with statutory insurance wait more than four weeks for a specialist

    35 percent wait months. With a family doctor, 74 percent are seen within a few days.

    Forsa for Techniker Krankenkasse, September 25 to October 21, 2025, 1,410 adults asked, figures for people with statutory insurance

    In detail

    How it was gathered

    • Forsa for Techniker Krankenkasse, by phone, September 25 to October 21, 2025.
    • 1,410 people aged 18 and over, analyzed for people with statutory insurance.

    What the data shows

    • Specialist: 8 percent within a few days, 13 percent within two weeks, 20 percent within four weeks.
    • More than four weeks: 56 percent, including 35 percent who wait several months.
    • Family doctor: 74 percent within a few days, 14 percent within two weeks.

    Source Techniker Krankenkasse, February 19, 2026.

    6.5 percent

    of practices had no income from statutory insurance in 2023

    In 2021 it was 3.8 percent. Practices that bill only privately are marked in Calenu.

    Statistisches Bundesamt (Destatis), cost structure statistics 2023, press release 431 of December 4, 2025

    In detail

    How it was gathered

    • The cost structure statistics of the Statistisches Bundesamt, Germany’s federal statistics office, for 2023.
    • A sample of at most 7 percent of practices, extrapolated. Every year since 2021.

    What the data shows

    • No income from statutory insurance: 3.8 percent of practices in 2021, 5.4 percent in 2022, 6.5 percent in 2023.
    • The share of income from statutory insurance fell to 67.0 percent in 2023, the lowest since 2000.
    • Dermatology had the highest private share at 52.3 percent, followed by orthopedics and trauma surgery at 47.2 percent.

    Source Statistisches Bundesamt, press release 431, December 4, 2025.

    Specialties

    From family doctor to speech therapy.

    Twenty areas, 172 specialties and services. Search for what is bothering you, or for the specialty you know. The app shows which of them you can book near you.

    20 areas, 172 specialties and services
      We found nothing for that. Write to us and we will add it.

      Calenu lists aesthetic treatments only with doctors.

      For practices

      Fewer calls.
      Fewer gaps in the calendar.

      Calenu shows a practice’s open times to the people looking right now.

      Calenu for practices

      Set up in one phone call. No minimum term, never per booking.

      In detail

      For practices

      • Calenu runs alongside the practice software. The practice enters each appointment itself, like one made by phone.
      • The practice sets the rules: which times, new or existing patients, statutory or private, lead time, confirmed at once or as a request.
      • Free in the first round, with no setup fee and no commission.

      Price

      Booking is free.

      Plus is for anyone who wants to keep an eye on more than one practice. Plus means more practices. It never means faster.

      Calenu

      €0forever
      • Open appointments with real times
      • Book, cancel, reschedule
      • Reminders and travel time
      • The whole family, no limit
      • Cancellation alert for one practice

      In detail

      Calenu, free

      • For the whole family: each person keeps their own appointments and reminders.
      • With travel time, the appointment tells you when to leave.

      Calenu Plus

      One month free
      €3.99a month, €39.99 a year. Comes with the app.

      At launch: anyone who opens an account before Plus costs anything gets Plus free for six months from the day they sign up. Then it ends by itself, with no subscription.

      • Cancellation alert for any number of practices
      • Book a series in one go: the same time every week or every two to four weeks, where the practice offers it
      • Your visits as a file
      • Cancel any time

      In detail

      Calenu Plus

      • Apple handles the payment. Your payment details stay with Apple.
      • Plus renews until you cancel it in your App Store settings. A first subscription can start with one free month.

      Questions

      Before you ask.

      Everything about data protection is in the privacy policy.

      Are the times really open?
      Yes. Calenu shows only times the practice released itself. When someone books through Calenu, the time disappears at once. Some times the practice confirms as it releases them; others it confirms one by one. Until then it is a request, and the app says so. Once the practice has confirmed, the app shows when.
      What happens to my health data?
      A booked appointment reveals what it is about. That makes it health data. It goes to the practice you book with and is stored in Germany. Notifications on your iPhone come through Apple, with as little content as you allow. The details are in the privacy policy.
      Do I need an account?
      Not to search. To book in the app, you sign in once, with Apple or with your email. The practice gets your name, date of birth, insurance, whether you have been there before, a way to reach you about a cancellation and, if you give it, your reason in one word.
      Does canceling cost anything?
      Not at Calenu. Some practices charge a fee for cancellations at very short notice. That is up to the practice; if it has entered its rule and deadline in Calenu, they are on the appointment before you book. If it has not, please ask the practice.
      Does Calu replace medical advice?
      No. Calu shows you which specialty fits, what to bring and who pays. Calu makes no diagnosis and does not judge urgency. The rules Calu follows, and which words show which emergency card, are in Calu’s rules.

      You can count on it

      Three promises.

      For every appointment, at every practice.

      Made for appointments

      Calenu shows you open appointments. Your doctor tells you what you have and what to do.

      In detail

      Made for appointments

      • Calu helps with four questions: which specialty fits, whether you need a referral, who pays and what to bring.
      • The intended purpose in the legal notice says what Calenu is.
      Time sets the order

      The next open time sets each practice’s place in the list, the same for all.

      In detail

      Time sets the order

      • “Verified” names what Calenu checked and on which day, such as the license to practice.
      • If practices pay one day, each pays the same flat fee. Its place in the list stays its next open time.
      Your appointment, your practice

      What you book goes to the practice you choose.

      In detail

      Your appointment, your practice

      • A practice gets what the appointment needs. What you booked at other practices stays between you and them.
      • You delete your account yourself, in the profile with “Delete account”. The rest is in the privacy policy.

      In an emergency, call 112.

      Urgent but not an emergency: 116117, the on-call medical service, around the clock and free of charge.

      Get started

      Your next appointment is sooner than you think.

      Coming soon to the App Store

      First for iPhone.

      Developed in close collaboration and constant dialogue with physicians across many specialties, in Germany and abroad.