# biorhythm cycles

> Calculate and track personal physical, emotional, and intellectual biorhythm cycles. (iPhone/iPad app by Petro Riznyk.)

- Source: https://appshunter.io/ios/app/biorhythm-cycles/id879917580 (this page in markdown: same URL + `.md`)
- Developer: [Petro Riznyk](https://appshunter.io/developer/879917583)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Rating: 4.32/5 from 220 App Store ratings · 22 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 4 MB
- Languages: English, Russian, Ukrainian
- Released: 2014-05-23
- Data updated: 2026-08-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/biorhythm-cycles/id879917580/reviews.md

## What is biorhythm cycles?

Biorhythm Cycles calculates your three classic biorhythm cycles from your date of birth and plots them on a clear, interactive graph.

According to biorhythm theory, three cycles run from the day you were born:
• Physical (23 days) — energy, strength and stamina
• Emotional (28 days) — mood and feelings
• Intellectual (33 days) — focus and creative thinking

Knowing your biorhythms makes it easier to sense what to expect from yourself on any given day — when to plan important things and when to take it easy.

Features:
• Interactive graph of all three cycles
• Swipe through days to see past and upcoming highs and lows
• Two calculation models: classic (whole days) and improved (more precise periods)
• Simple, modern interface

Just enter your date of birth and the app instantly builds your biorhythms. Everything is calculated right on your device.

Download for free and follow your biorhythms every day!

## Key features

- Calculate physical, emotional, and intellectual biorhythms
- Compare daily biorhythm values to personal feelings
- Utilize classical and improved biorhythm models
- View generalized biorhythm graph
- Track cycles from birth date

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


## Recent user reviews (10 of 22)

All indexed reviews: https://appshunter.io/ios/app/biorhythm-cycles/id879917580/reviews.md

### 5/5 — Very exact

*2026-01-20, version 2.0.1*

Tremendously precise...differs a lot from the classical...it makes you wonder why!!

### 4/5 — Rec

*2024-01-08*

Love this app for several years

### 1/5 — No Coherence

*2023-03-09, version 2.0.1*

I have Biorhythm on both my iPhone and iPad. Same birthday on each but biorhythms are as different as night and day. Seems as there is no science behind this app!!!

### 1/5 — Disappointing

*2023-03-03, version 2.0.1*

I downloaded the free version but am very disappointed and will not pay to upgrade.
I tried to edit the date but all the other options were greyed out so I couldn’t have a date of birth other than today’s date eg 3rd March 2023

### 1/5 — Not a good start!

*2023-01-29, version 2.0.1*

I downloaded as it looked an interesting app and was asked to put in DOB.  Unfortunately, every time I put it in it defaulted to todays date.  After several tried, I gave up.

### 2/5 — Needs more explanation

*2022-12-08, version 2.0.1*

Needs more explanation on how to use and benefit from the app.

### 5/5 — Muy útil !!

*2021-08-09, version 2.0.1*

Lo ha usado mucho a través de los años. Altamente recomendable.

### 5/5 — Uncannily accurate!

*2020-05-31, version 2.0*

Anyone who feels ‘Moon-centric’ could benefit from this app in respect to their lifestyle.

### 1/5 — Rubbish

*2020-04-28, version 2.0*

Useless. Couldn’t even enter date of birth.

### 1/5 — Not very useful time waster

*2019-11-04, version 2.0*

Only for people with a good knowledge of biorhythms that can do their own interpretations. 
No search facility means loads of finger work. 
No interpretations at all. 
Very basic.

## Frequently asked questions about biorhythm cycles

### What does this app do?

This app helps you calculate and track your personal biorhythms, which are periodic changes in your emotional, physical, and intellectual condition. By knowing your biorhythms, you can gain insight into your energy levels, mood, and creative abilities on any given day.

### What are the key features of this app?

Key features include the ability to calculate physical, emotional, and intellectual biorhythms using both classical and improved models. You can compare your daily feelings to your calculated biorhythm values and view a generalized graph of all three cycles.

### Is this app free to use?

The app is free to download and use, offering basic functionality for calculating and tracking your biorhythms. There are in-app purchases available, which may unlock additional features or models.

### What information do I need to use this app?

To use the app, you will need to provide your date of birth. This information is used to calculate the start of your physical, emotional, and intellectual cycles, which then continue throughout your life.

### How can I use this app in my daily life?

You can use this app to understand why you might be feeling a certain way on a particular day. For example, if your physical biorhythm is low, you might experience less energy. If your emotional biorhythm is high, you might feel more optimistic.

## Version history (last 5 releases)

### 2.1.0 — 2026-07-07

Biorhythm Cycles is back with a big refresh:

• New welcome screen — enter your date of birth right when you first open the app
• Redesigned, modern Settings with an easy calendar picker for your birthday
• New privacy & tracking choices — you control how ads work
• Rebuilt for the latest iOS, with performance and stability improvements

Thank you for using the app!

### 2.0.1 — 2021-07-28

bug fix

### 2.0 — 2018-06-07

This app has been updated by Apple to display the Apple Watch app icon.

Infinity scroll!
You can find biorhythms for any date.

### 1.5 — 2015-06-05

Expanded range of displayed data
Added button "Today" that allows you to quickly return to the current date
Improved display of data in the iPhone 6
Fixed minor bugs

### 1.4 — 2015-02-02

Added chart description

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## More apps by Petro Riznyk

- [Apartment renovation plan](https://appshunter.io/ios/app/apartment-renovation-plan/id947362982)
- [Wallpaper calc](https://appshunter.io/ios/app/wallpaper-calc/id961443793)

All apps by Petro Riznyk: https://appshunter.io/developer/879917583

## Related topics

[biorhythm cycles](https://appshunter.io/ios/topics/biorhythm-cycles) · [biorhythms and critical days](https://appshunter.io/ios/topics/biorhythms-and-critical-days) · [the biorhythm](https://appshunter.io/ios/topics/the-biorhythm) · [biorhythm calculator simple](https://appshunter.io/ios/topics/biorhythm-calculator-simple) · [biorhythm alertness](https://appshunter.io/ios/topics/biorhythm-alertness) · [biorhythm tracker](https://appshunter.io/ios/topics/biorhythm-tracker) · [biorhythm](https://appshunter.io/ios/topics/biorhythm) · [biorhythm chart](https://appshunter.io/ios/topics/biorhythm-chart)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*