Biorythm

Biorythm

A calm place for the rhythms of your days: your biorhythm cycles, the Moon, the Sun and space weather.

Coming to iOS and Android

A mirror, not a verdict

If you often ask yourself why things happen the way they do, patterns can give words to what you feel. Biorythm shows you rhythms to reflect on. It does not decide anything for you, and it never tells you what your life means.

  • Biorythm home screen with the daily readiness score
  • Biorythm cycles chart screen
  • Biorythm Moon screen
  • Biorythm Sun screen
  • Biorythm space weather screen
  • Biorythm settings screen with the Delete my data option

What you can use today

The free app brings four everyday rhythms together, with a daily score on top.

  • Biorythm screen with the physical, emotional, intellectual and intuitive cycles drawn on an interactive chart

    Your cycles

    See your physical, emotional, intellectual and intuitive cycles on an interactive chart covering the past week, today and the week ahead. Drag across the chart to explore any day and spot critical days, when a cycle crosses the zero line.

  • Moon screen showing today's phase and illumination

    The Moon

    Today's phase and illumination, rendered live. See moonrise and moonset for your location, the next new and full moon, supermoon notes, and upcoming eclipses through 2040.

  • Sun screen with sunrise, golden hour and sunset times and a UV estimate

    The Sun

    First light, sunrise, golden hour, solar noon and sunset, with a countdown to the next moment of light. A clear-sky UV estimate is calculated on your device.

  • Space weather screen with the Kp index, solar wind speed and solar flare level

    Space weather

    The current Kp index, solar wind speed and the strongest solar flare of the past 24 hours, from public NOAA data, with plain-language notes on what the numbers mean.

  • Home screen with the daily readiness score from 0 to 100

    Today's readiness

    A daily score from 0 to 100 that combines your cycles, the Moon, space weather and daylight, with a short briefing and a clear “why this score” breakdown.

Private by design

No account is needed for the free app. Your name, date of birth and location stay on your device and are never sent to us. Usage statistics and crash reports are sent only if you allow them, and you can switch them off at any time. “Delete my data” in Settings removes your details from the device.

Read the privacy policy

Where Biorythm is going

These are things we will grow into over time. None of them is part of the app yet, and we do not promise an order.

  • Deeper cycles, and how they blend, will give you more ways to read your rhythm.
  • A cosmic timing calendar will help you look at days before you choose them.
  • You will be able to compare rhythms with a partner, a friend or family.
  • A daily mood and energy journal will let you notice your own patterns.
  • Home-screen widgets and gentle reminders will keep your rhythm within reach.
  • A guide that knows your rhythm of the day is something we are building.
  • Astrology reports and your natal chart will be part of the story.
  • Audio rituals and soundscapes will help you settle into the day.
  • Syncing sleep and heart data from your wearables will be an option.
  • A cycle overlay will be kept on your device.

For entertainment and general wellness

Biorythm is for entertainment and general wellness information only. It is not a medical device and does not give medical advice. Cycle and Moon meanings come from tradition and folklore, and are shared for reflection.

Privacy policy · Delete your data · [email protected]