Calendar
Period, follicular (forecast), fertile window, ovulation and PMS — right in the calendar, each in its own colour.
Average cycle and period length, a “regular / irregular” flag and a forecast of upcoming periods — from your logs (the more cycles, the more accurate).
If your period hasn’t started on time, we show the delay in days and a gentle prompt.
“Period soon” a few days ahead — a discreet heads-up.
Highlights the window of higher conception chance and the most fertile day — for planning or avoiding.
Log the start and length; intensity: light / medium / heavy.
Daily mood plus symptoms (cramps, headache, bloating, fatigue, nausea and more) — history builds up and the PMS pattern becomes visible.
Switch it on by the first day of your last period or by the due date. Current week and trimester, a countdown to the due date (40 weeks / 280 days); the cycle forecast pauses.
Each week — what the size compares to, plus a short note on development.
Key milestones by week (screenings, tests, important dates) with a status: done / now / soon / passed.
The separate “health calendar” can be locked with a PIN. Everything is computed locally, without AI. It’s an estimate from your logs — not contraception or a medical diagnosis.
Free
- 5 cycle phases on the grid
- Period forecast and regularity
- Delay in days
- Reminders “period soon”
- Fertile window and ovulation
- Period and flow log
- Mood and symptoms (history, PMS pattern)
- Pregnancy mode: weeks, trimesters, countdown to due date
- Baby size by week + milestone checklist
- PIN on the “health calendar”
In PRO
- Export cycle history to CSV — for yourself or to show a doctor (the layer’s only PRO feature)
FAQ
Is it private?
Yes. The separate “health calendar” can be locked with a PIN, and everything is computed locally, without AI or data sharing. No ads, and we don’t sell data.
How accurate is the forecast?
It’s an estimate from your logs and average cycle length — the more cycles you log, the more accurate. Not contraception or a medical diagnosis.
Is pregnancy mode paid?
No. Pregnancy mode (weeks and trimesters, baby size by week, milestone checklist, countdown to the due date) is completely free.
What’s in PRO?
The layer’s only PRO feature is exporting your cycle history to CSV (to archive or show a doctor). All the rest of the biology is free.
Does it work offline?
Yes. Tracking, forecasting and pregnancy mode work without the internet.
How is this different from “Biorhythms”?
The cycle is real biology from your logs. Biorhythms is an entertainment layer based on your birth date. They’re different things.