Calculate your biorhythms and critical days! Check out your birth date compatibility with anyone!

Biorhythms app calculates your personal biorhythms, critical days and birth date compatibility. It allows you to create up to 10 user profiles with personalized color theme and daily reminder. The comprehensive and easy to use interface allows quick and efficient biorhythms check on daily basis.

- Elegant, easy to use interface;
- Calculates biorhythms from 2 weeks in the past to the next two months;
- Shows each biorhythm's cycle daily value for the specified period;
- Shows each biorhythm's cycle daily trend (raising / declining) for the specified period;
- Shows daily highlights - short description and advises for each day;
- Shows birth date compatibility;
- Calculates critical days;
- Provides short yet useful advice for each critical day;
- 18 different color themes to choose from;
- Personalized color theme for every user profile;
- Personalized daily reminder for every user profile;
- Up to 10 different user profiles;
- Additional cycles - Fortune and Intuition.

Biorhythms theory
The Biorhythms Theory states that human lives move in predictable, undulations involving three separate cycles:
- Physical - 23 days
- Emotional - 28 days
- Intellectual - 33 days
These cycles start at your day of birth and affect your daily life.

Critical days
Critical days have been described as full of danger and difficulty. They are days of flux and high instability. These are not days to fear, but to perhaps be on guard. Critical days are not days when an accident will occur, but are a time when you will be more accident prone. Just knowing that this is the case can prevent the accident or error.

What’s New

Version 4.4.0

Updated to comply iOS 14.0+ transparency policy

Ratings and Reviews

4.7 out of 5
80 Ratings

80 Ratings

Krtyr ,


Biorhythms are the real deal! This app shows me what I need to know about my self, my partner, and my son. No wonder we barely get along (my son, that is)!! This helps me know how and when to communicate with him. I found that my partner and I are so great together because we are completely in sync! On days my chart suggests I stay home, i do! On days it suggest I can’t think straight, it’s right! Just WOW! To the developers.... Thank you! This app must have taken a great deal of time, research, and work. I applaud you, and Thank You again!!!!

lindab137 ,

Good job

The status is easy to read and see, the explanations easy to understand

jorb69 ,

A purely negative app

I used this app thinking in my search for answers to my questions about life in general and in finances in particular I would gain some insights as to how to improve my circumstances. I was wrong. This is one app where most of the time it tells you only negative stuff surrounding you, nothing positive to forward to! How would I trust this? It makes you feel like you’re doomed at birth so what’s the purpose of living? That said, those prone to negativism will self prophesy themselves and do what’s only brewing on their mind to make it a reality. Clearly one Devil inspired this app.

App Privacy

The developer, Sensortronic, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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