CallaWorks without a cycle
After a hysterectomy, with an IUD, on contraception, or years past the last period – nothing here asks you to log one to keep going.
Coming to the App Store
Track perimenopause. Keep it on your phone.
Months of symptoms, hot flashes and HRT, turned into one page your doctor can read in a minute.
Tell me when it shipsOne email when it launches. Nothing else, and nobody else gets the address.
One tap when it starts
A hot flash takes a second to log, from the Home Screen or the widget. The rest of the day is a short list, not a questionnaire.
No account. No server.
Your entries are written to a private database on the iPhone and stay there. There is nowhere to sign up, because there is nothing to sign up to.
Observations, not verdicts
Every pattern comes with the number of days behind it. Calla does not diagnose and will never suggest a dose.
Your data stays yours
JSON, CSV and the PDF report are never behind the paywall – not on a trial, not after it ends.
A year of days, at a glance
Each day shaded by how heavy it was. Colour is never the only signal – every shade has a word beside it.
One page for the appointment
Pick the range and the sections; the PDF is built on the phone. Notes and lab results go in only if you want them.
What leaves your phone
Anonymous counts of which screens were used, crash reports, and whether a subscription is active. That is the whole list. Never a symptom, a dose, a note or a date – the event schema cannot carry them, and a second check strips anything that looks like health data before it is sent.
Both switches live in Settings → Privacy, and turning them off stops analytics and crash reports together. The full policy spells out the rest.
Questions people ask first
Do I need an account?
No. No sign-up, no password, no email address. The app works the moment you open it.
What happens to my data if I stop paying?
It stays on the phone, and export keeps working. A subscription buys the insights and the report, never access to your own entries.
Does it need Apple Health?
No. Apple Health is optional in both directions, permission by permission, and anything imported from it is deliberately left out of the iCloud backup.
Is this medical advice?
No. Calla is a tracker, not a medical device. It shows what you logged so the conversation with your clinician can start from data instead of memory.
When does it ship?
It is in testing on iPhone now. Write to us and you will get one email when it lands.