Kalmo Deutsch

Headache calendar for iPhone

Your headache days, counted.

For everyone who keeps a headache diary for their neurologist, GP or headache clinic. One tap a day is enough. Kalmo counts the days and gets them ready for your next appointment.

Coming soon to the App Store

Free · no ads · no account

Kalmo, “Today” screen: the question “How was your day?” with the buttons headache-free, headache and migraine, below two days without an entry and the numbers for the month.

One day, one tap

How was your day?

Headache-free, headache or migraine: one tap, done. Just like the paper headache diary doctors and headache clinics know.

For a headache or migraine, pick the intensity and tap your acute medication. Many people log in the evening, so you can log yesterday too. If days are missing, Kalmo lists them so you can fill them in.

If you like, record more: aura, impact, duration, symptoms, possible triggers, your period and a note.

Edit day in dark mode: migraine selected, intensity moderate, impact significant, duration 20 hours, one acute medication.

Widget

Log today without opening the app.

Add the widget to your Home Screen. It asks “How was your day?”: tap free, headache or migraine, and today is logged.

Afterwards the widget shows your entry. Tap it to open the day in Kalmo and add intensity or medication. On the Lock Screen, too, you see whether today is logged.

The widget requires iOS 17 or later.

Four Kalmo widgets on the Home Screen. At the top two small ones: on the left the question “How was your day?” with three buttons for free, headache and migraine, on the right after logging “Today: Migraine, severe, Sumatriptan ×1, tap to change”. Below two medium ones: the same question with the buttons Free, Headache and Migraine, in the footer “Yesterday free” and “November: 4 headache days”; then “Migraine, saved” with the Change button and “November: 5 headache days”.

Calendar

Your month at a glance.

Every day has a color and a symbol: an open circle for headache-free, a half circle for headache, a full circle for migraine. Dots mark medication days.

Below the month you see headache, migraine and medication days and how many days you recorded.

Days without an entry never count as headache-free.

  • headache-free
  • headache
  • migraine
  • not recorded
Calendar for November 2026: days as tiles with a color and a symbol, below headache days 9, migraine days 1, medication days 9, recorded 11 of 14.

Before and after

What has changed since you started a therapy, in counted days.

Add a therapy with its start date, for example a preventive medication, an injection or endurance exercise. Kalmo puts the counted migraine, headache and acute medication days of the 30 days before next to the first three months after, always with the number of recorded days.

A change in percent only appears when both periods are complete and fully recorded. Nothing is extrapolated.

Kalmo shows numbers and does not judge any treatment. Talk to your doctor about what they mean for you.

Example with made-up numbers

Preventive · since July 17

Migraine days, counted

Before30 days
830 of 30 recorded
Month 1
630 of 30 recorded
Month 2
527 of 30 recordedwith gaps
Month 3
212 of 30 recordedpreliminary

−25% documented migraine days in month 1 compared with the 30 days before the start

A change does not show which treatment caused it.

Report

Ready for your appointment.

Choose the last 3 or 6 months or your own period. Kalmo creates a PDF in English or German.

At the top you find what matters for the consultation: recorded days, headache, migraine and acute medication days, therapies and your questions for the appointment. Monthly figures, medications and the calendar follow.

Share the PDF by email or AirDrop, or print it.

Excerpt from the doctor’s report with sample data: data coverage 70 of 75 days, headache days 21, of which migraine days 6, acute medication days 18, therapies, most used acute medications and monthly figures.

Privacy

Your data stays on your iPhone.

  • No account

    Open the app and start logging. There is no sign-up.

  • No server

    Kalmo sends nothing to the internet. No analytics, no ads.

  • You decide what to share

    Data only leaves the app when you share it: as a PDF, a CSV or a backup you can restore.

  • Apple Health, if you like

    If you turn it on, Kalmo adds your headache days with intensity to Apple Health. It reads nothing from Health.

Also

  • Daily reminder at your time, with buttons to log right away
  • Quick logging with a long press on the app icon or from the Lock Screen widget
  • Your own list of medications
  • A reminder to back up, about once a month
  • English and German, light and dark

Questions

How much does Kalmo cost?

Nothing. Kalmo is free, with no ads and no in-app purchases.

Do I need an account?

No. There is no sign-up and no server. Your entries are stored only on your iPhone.

What happens when I get a new iPhone?

Your data comes along when you transfer your iPhone backup (iCloud or computer) to the new device. You can also share a backup from Kalmo and restore it on the new iPhone.

Does Kalmo replace my doctor?

No. Kalmo documents what you enter, counts days and compares periods. It does not diagnose, does not judge treatments and gives no recommendations. Talk to your doctor about headaches, medication and therapies.

Is Kalmo available for Android?

Not at the moment. Kalmo is available for iPhone.

I have a question or found a bug.

Write to us at apps@base42.app. We answer in English or German.

One tap a day is enough.

Start with today. Kalmo keeps count.

Coming soon to the App Store

Free · no ads · no account