Cycora
Period & fertility · English and Filipino
Your cycle, on your phone,
and nowhere else.
A period and fertility companion for couples who plan naturally. Cycora uses your own cycles to show the days you are most likely to be fertile, and keeps every date on your phone. No account. No server. And when it cannot give you a straight answer, it says so instead of guessing.
- No account
- No server
- No ads
- Period
- Fertile window
- Safe day
- Predicted period
One line, every morning
The app answers, then shows its working
Cycora counts the days between your period start dates. Once it has six cycles it takes your shortest and your longest and marks the days between — the days you are most likely to be fertile. Log a period in two taps and the month redraws.
Safe day
Outside the window, in the natural family planning sense. Never a guarantee, and the app does not pretend otherwise.
Fertile window — day 4 of 11
Where you are inside the window, not just that you are in one. Worded for your goal: avoiding, or trying.
Period, day 2
What you logged, drawn back to you. Tap any day to change it.
The part most trackers skip
It tells you when it cannot tell you
If your shortest and longest cycles are weeks apart, an honest fertile window covers most of the month. Cycora draws that, says why, and does not quietly narrow it to look more useful than it is.
Two things narrow it truthfully: finding a period you did not log, and adding your own temperature and mucus readings, which can close a window days before the dates alone would.
“Your shortest and longest cycles are 23 days apart, so the fertile window covers much of the month. That is the calendar method working correctly, not a mistake.”
On the phone
Three screens that do the arguing
-
It says when it is estimating
Fewer than six measured cycles and the window comes from the range you remembered. Every label says so — banner, calendar and widget.
-
Your own signs can narrow it
Waking temperature and mucus, read through the symptothermal double-check. One sign alone is never enough to close a window.
-
And it stays quiet the rest of the time
Every reminder is optional. The ones about your cycle say only “Open Cycora” on a lock screen.
Privacy
There is no server to trust
Not a policy, an architecture. Cycora has no account to create and nowhere to send anything, and it ships no analytics, no crash reporting and no advertising SDK. It is not a setting you have to find — there is no other mode.
The honest trade-off. Because nothing is uploaded, there is no backup. If you lose your phone, the history goes with it — Cycora can write it to a file you keep, free, and remind you every three months to do it. That file is the only copy that survives.
Cycora Pro
One payment, and it stays bought
₱149 once · about US$2.99 elsewhere
Not a subscription, not a renewal, and there are no ads to remove because there are no ads. Nothing that keeps you safe is ever behind it.
Free, always
Everything the app is actually for.
- The calendar and the fertile window
- Every warning and every disclaimer
- Period, fertile window and backup reminders
- The PIN and fingerprint lock
- Saving a backup file you keep
- Restoring from a backup file
- Opening a partner's code
Cycora Pro
Accuracy and reach, bought once.
- Temperature and mucus tracking
- A home screen widget
- Sharing a partner code
- Notes to your partner
- A chart of every cycle length
- Calendar (.ics) export
- A cycle report PDF for your doctor
- A picture of your calendar
Before you rely on it. Cycora is not a contraceptive and it does not prevent pregnancy. It is not a medical device and it does not give medical advice.
In everyday use the calendar method is meaningfully less effective at preventing pregnancy than it is when followed perfectly — more people become pregnant using it than the ideal figures suggest. If you are avoiding or trying for a pregnancy, talk to a doctor or a trained fertility awareness instructor.
Free to download
Get Cycora
On iPhone, iPad and Android, in English and Filipino. The calendar and the fertile window are free; Pro is one payment inside the app.
Questions, or something wrong?
Write to villetorio@gmail.com. Wording that reads oddly in Filipino is worth reporting too — that copy is under review, and corrections are welcome.