Daily rhythms & self-reflection
Every day has a shape.
Three biorhythm cycles run from the day you were born. BioCalendar reads where they sit today and writes it down for you, one morning at a time.

Three stepped tracks, one for each biorhythm cycle, drawn from the day of birth to day 70: they begin together, drift out of step, and will not begin a day together again for 21,252 days.
Three biorhythm cycles, counted from your birth date
Three counts, from the day you were born.
Day1of life
Physical, emotional and intellectual: each starts here, and each is counted in whole days.
- Physical, 23 days
- Emotional, 28 days
- Intellectual, 33 days
Reading a day
Eight states, one reading.
Every biorhythm cycle is a loop through the same eight states, in the same order. On the dial the days above the midline sit out, the days below sit in, and each cycle has a hand. A day is read where the three point.
- c, Critical, turning up: Day 1 of the cycle. It crosses the line on its way up and the battery starts to charge. A critical day, traditionally read as unsettled rather than bad.
- +, Charging: Above the line and climbing towards full. Energy building each day.
- H, Full charge: The peak of the cycle. The battery is at its fullest; from tomorrow it eases.
- #, Charged, easing: Past the peak but still above the line. Plenty of charge, slowly running down.
- C, Critical, turning down: The cycle crosses the line on its way down, which takes two days. Critical again: a change of direction.
- -, Depleting: Below the line and still falling. The battery is running down towards its lowest point.
- L, Lowest charge: The bottom of the cycle. From here the battery begins to recharge.
- *, Recharging: Below the line but climbing back, recharging towards the start of the next cycle.
1 day of life
Born on 1 January 2000, read on your own today.
Physical
A 23-day cycle
—
Emotional
A 28-day cycle
—
Intellectual
A 33-day cycle
—
BioRating
out of 10
on a scale of −3 to +10
Together, the three states give the day its BioRating and choose one of 512 written readings. Yours is in the app.
Everything in the app, tab by tab.
Home
Your day, in one screen.
Where each cycle sits this morning, a face for its state, and the written reading for the day you are in.
Calendar
Any day, at a glance.
Every date carries its symbols. Look back at last week, or ahead to a day that matters to you.
Goals
Timing for what matters.
Name your goals and see the stretches of the next thirty days when the cycles behind each one sit above their midline.
Family
Compare days with your household.
One plan for up to five people. See, cycle by cycle, where your rhythms fall in step with someone else’s.
Ask
Ask about your week.
A companion that explains your cycles in plain language. It is there to help you think, not to predict anything.

Home
Your day, in one screen.
Where each cycle sits this morning, a face for its state, and the written reading for the day you are in.

Biorhythm Journal
Nature keeps time.
Biorhythms are based upon the fact that many things within nature happen in cycles: things that occur and recur. Planets orbiting the sun, the migration of birds and fish, the tides, the phases of the moon. The list is almost endless.
twice a day
The tides
The sea rises and falls about every twelve hours and twenty-five minutes, pulled by the moon and the sun.
once a year
Migration
Cranes, swallows and salmon travel the same routes at the same season, year after year.
every 29½ days
The moon
From new to full and back to new again in about twenty-nine and a half days.
And in you, three more.
BioCalendar follows three such cycles in a person, each on its own fixed period, and reads the day by where all three sit at once. Every cycle passes through the same eight states in turn, and the states have names.
a 23-day cycle
Physical
Energy, strength, endurance and physical resilience.
a 28-day cycle
Emotional
Confidence, mood, creativity and emotional steadiness.
a 33-day cycle
Intellectual
Logic, memory, concentration and clear thinking.
About Biosoft Global
Three rhythms, followed for 45 years.
It began as one long piece of work: decades spent computing and tracking the physical, emotional and intellectual cycles across hundreds of thousands of recorded days. BioCalendar is where it lives now. It does not diagnose, forecast or promise. It tells you where your three rhythms sit today, in plain words, and lets you decide what to make of it.
- cycles of 23, 28 and 33 days
- 3
- written daily readings
- 512
- days free to begin
- 7
“My app has been designed and developed to help people in all walks of life.”
Questions
Start here, or write to us.
Download BioCalendar from the App Store or Google Play, create an account and enter your date of birth. Your first reading is ready the moment you finish.
A biorhythm is a cycle that a person is understood to move through on a fixed period. BioCalendar follows three: physical over 23 days, emotional over 28 and intellectual over 33. Each day, the position of all three together selects one of 512 written descriptions.
Every plan starts with seven days free, with every reading included. You choose a plan when you start, and nothing is charged until the trial ends. Cancel in the App Store or Google Play before then and you pay nothing.
Subscriptions are handled by the App Store or Google Play, so you cancel there: in your Apple ID or Google account subscriptions, not in the app. Cancelling keeps access until the end of the period you have paid for.
Talk to us
Questions, ideas or a problem with the app. A person replies by email.
















