Period and cycle tracker for iPhone
Orbelle predicts your next period as an honest range, logs a day in under ten seconds, and keeps every entry on your iPhone. No account to make. And Aurie, a little phoenix, is reborn with every cycle.
Tracking, predictions and the Doctor Report are free, for good. For iPhone and iPad.
Predictions you can plan around
“Likely Nov 2 to 4, possible Nov 1 to 5.” Tap “Why this prediction?” to see which cycles were used, which were left out and why.
Private by design
Your entries live on your iPhone. There is no sign-up, no Orbelle server holding your cycle, and no tracking code in the app.
Free where it counts
Logging, predictions, the calendar, cycle history and the Doctor Report PDF cost nothing, today and later.
Day 7FollicularBabyafter your period
Fledglinggrowing
Youngnearly there
Grownaround ovulationMeet Aurie
Aurie grows with your cycle, paced by your own days, not a fixed 28. When your period ends she is reborn from the embers as a baby, and by your estimated ovulation she is fully grown and glowing.
Estimate only. Not birth control.
What Orbelle does
One sheet of chips. Flow, spotting, pain, symptoms, mood, energy, discharge, tests, temperature and notes, all optional. Custom tags are unlimited and free.
Logged periods are filled circles, predicted ones are dotted rings, fertile days are hatched and ovulation is a small star. Shapes as well as colors, so it works for color-blind eyes and prints clearly.
Months scroll up and down, two years back and one ahead, and you can log or fix any past day.
Your last cycles as bars against your usual range, your averages, and how much your cycles vary, in days, never as a score. Pattern Mirror points out what tends to come back each cycle, like bloating in the days before your period.
We show you patterns. You decide what they mean.
Pick any date range and Orbelle makes a clean PDF: cycle lengths, a cycle map that prints in black and white, symptoms with their timing, pain, mood and energy by phase, temperature, tests, and the questions you want to ask, with room for the answers.
It records what you logged and never interprets it.
Sample report with example data
For where you are
Period and fertile-window estimates, symptoms and patterns.
Ovulation tests replace the estimate as soon as you log a positive. Intimacy logging turns on.
Bleed predictions only, with a daily reminder if you want one. No fertile window.
Predictions pause and your due date shows. Aurie nests.
Coming to Orbelle Pro: perimenopause, pregnancy week by week and postpartum modes.
Privacy
Orbelle was built so there is nothing for anyone to collect. Not a promise to behave well with your data, a design where we never hold it.
No email, no password, no profile. Open the app and start.
Entries are stored on your device. No analytics, no tracking, no crash reporters and no third-party code.
Lock Orbelle with Face ID or your passcode. Reminders say “Aurie says hi” on the Lock Screen unless you choose more detail.
Optionally share period, spotting, tests and temperature with Apple Health. Intimacy is never shared unless you turn it on.
Export everything as a CSV file, or save an encrypted backup wherever you like and restore it on a new phone.
Erase everything takes one confirmation and happens at once.
Privacy Receipt
What Orbelle has sent over the internet: nothing.
Your entries: on this iPhone.
Account: none.
Pricing
$0 forever
$4.99 a month
or $39.99 a year
Coming to Pro: life-stage modes and Aurie's wardrobe.
$99 once
Everything in Pro, for good. One payment, never a subscription.
Questions
Yes. Logging, predictions, the fertile window, the calendar, cycle history, the Doctor Report, widgets, the Apple Watch app, reminders and Aurie are free. Orbelle Pro adds Plan Ahead, deeper insights, your prediction track record, What helped, symptom chips, Aurie's phase guides, cycle stories, every pattern, app themes and extra app icons.
No. Orbelle is not a method of birth control and not a fertility treatment. Fertile-day and ovulation estimates come only from what you log and can be wrong, and pregnancy can result from intercourse on any day of your cycle. Talk with a healthcare professional about contraception and pregnancy.
It averages your last six cycles and shows a likely range and a wider possible range, based on how much your cycles vary. From your first period it shows a clearly labeled first guess, and it tightens as you log. “Why this prediction?” shows the cycles it used and any it left out.
On your iPhone. There is no Orbelle account and no Orbelle server holding your entries. You can optionally share some data with Apple Health, export a CSV, or save an encrypted backup file yourself.
Yes. Lock the app with Face ID or your passcode, keep reminders discreet on the Lock Screen, and keep intimacy logging folded away or switched off. Intimacy is never written to Apple Health or included in a report unless you choose it.
Yes, and it is free. See Aurie and your cycle day, and log your period or a quick symptom from your wrist. Home and Lock Screen widgets are free too.
iPhone and iPad with iOS 17 or iPadOS 17 or later.
Orbelle's phoenix. She lives one life every cycle: reborn as a baby when your period ends, fully grown around ovulation, resting in her nest during your period. Tap her and she reacts. If you would rather not see animations, Reduce Motion shows her as still art.
