The instrument family
Period, ovulation, fertility, pregnancy, and parenting tools — all built on the same calibrated cycle engine, all reviewed to the same clinical standard.
01 live · 23 in calibration
01 · Menstrual cycle
5 instruments
Period Calculator
Your next period, ovulation day, and fertile window — read off the dial in seconds.
Open the instrument →Menstrual Cycle Calculator
Map all four phases of your cycle and what each one means for your body.
Period Tracker
Log real cycles and let the engine calibrate to your personal averages.
Cycle Length Calculator
Work out your true average cycle length from your last several periods.
Late Period Calculator
How late is late? Days overdue, likely causes, and when to test.
02 · Fertility & ovulation
6 instruments
Ovulation Calculator
Pinpoint your most likely ovulation day across the next several cycles.
Fertile Window Calculator
The six days that matter when you're trying to conceive, mapped per cycle.
Implantation Calculator
Estimate your implantation window from ovulation or transfer date.
Conception Calculator
Work backward from a due date — or forward from a cycle — to likely conception.
hCG Calculator
Track hCG doubling time between beta tests in early pregnancy.
IVF Due Date Calculator
Due dates from day-3 or day-5 transfers, calibrated for IVF timelines.
03 · Pregnancy
5 instruments
Due Date Calculator
Your estimated due date from LMP, conception, or ultrasound — with the week-by-week map.
Pregnancy Week Calculator
Exactly how far along you are, and what's happening this week.
Trimester Calculator
Where each trimester starts and ends on your personal timeline.
Pregnancy Weight Gain Calculator
Healthy gain ranges by pre-pregnancy BMI, tracked trimester by trimester.
Baby Kick Counter
Count movements in the third trimester and learn what patterns to watch.
04 · Baby & parenting
4 instruments
Baby Age Calculator
Weeks, months, and adjusted age for preemies — without the mental math.
Growth Percentile Calculator
Weight, length, and head circumference against WHO growth standards.
Feeding Schedule Calculator
Age-appropriate feeding amounts and intervals for the first year.
Sleep Schedule Calculator
Wake windows and nap timing by age, from newborn to toddler.
05 · Wellness & insights
4 instruments
BBT Chart
Plot basal body temperature and spot your ovulation shift.
Symptom Tracker
Log symptoms by cycle day and see your personal patterns emerge.
Cycle Syncing Guide
Training, nutrition, and energy mapped to each phase of your cycle.
AI Cycle Insights
Personalized pattern analysis over your logged history — the premium instrument.
The bench is filling in deliberately. Every instrument launches on the same cycle engine, with the same evidence standard and named clinical review — no tool ships before it's calibrated. The dial above each Nº goes live in build order.