# myBiorythm

> Calculates and visualizes personal mental, physical, and emotional biorhythm cycles. (iPhone/iPad app by xis int. ag.)

- Source: https://appshunter.io/ios/app/mybiorythm/id1097859459 (this page in markdown: same URL + `.md`)
- Developer: [xis int. ag](https://appshunter.io/developer/331701100)
- Category: Health & Fitness, Reference
- Price: Free with in-app purchases
- Rating: 3.90/5 from 69 App Store ratings · 24 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 9 MB
- Languages: American English, French (France), German (Germany), Italian, Polish, European Spanish
- Released: 2016-06-30
- Data updated: 2026-07-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/mybiorythm/id1097859459/reviews.md

## What is myBiorythm?

myBiorhythm lets you visualize the Biorhythm for a given Birthday for Today or at any given Date. It has an Overview of the best and worst Days for the selected Year. There is also a separate Apple Watch App that show's you the Percentage and the Icons on your watch either in a 'table view' or as a complication.
In Landscape Mode you can see an increased Graph with more days.
The additional Database Module allows you to store a multitude of different Birthdays and to swap between them quickly and easily just by 'selecting' which one has to be active. The Group Module lets you create Group of Persons and see their curves as a median value and the current day for each person at a glance.

According to the theory of Biorhythms, a person's life is influenced by rhythmic biological cycles that affect his or her ability in various domains, such as mental, physical and emotional activity. These cycles begin at birth and oscillate in a steady fashion throughout life, and by modeling them mathematically, it is suggested that a person's level of ability in each of these domains can be predicted from day to day. The theory is built on the idea that the biofeedback chemical and hormonal secretion functions within the body could show a sinusoidal behavior over time.

The free Version only offers the primary Values, via InApp Purchase you can upgrade to the full version and benefit from additional Values plus the combined Line and another View that shows you the best and worst Days of the Year.

## Key features

- Biorhythm visualization for any date
- Overview of best/worst days
- Apple Watch app with complications
- Database for multiple birthdays
- Group module for median values
- Landscape mode enhanced graph

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| All Curves | $0.99 | one-time |
| Database | $0.99 | one-time |
| Team | $0.99 | one-time |


## Recent user reviews (10 of 24)

All indexed reviews: https://appshunter.io/ios/app/mybiorythm/id1097859459/reviews.md

### 3/5 — Used to work well

*2026-01-11*

Always a distortion in the sine curves now.

### 1/5 — Great update!

*2025-12-26*

As of latest update (Dec 2025) no idea how it is calculating biorhythms, other than incorrectly.

### 1/5 — Will not let me restore my purchases

*2024-03-03*

App got uninstalled and when I click on restore my purchases and enter my password nothing happens!

### 5/5 — Great update!

*2023-11-01*

Love all the info this app provides, and the latest update (Nov 2023) fixes things and adds more functionality - looks great!

### 1/5 — Am I too bold?

*2022-12-26*

The system never permitted me to advance past entering my DOB.

### 4/5 — Lots of good info, HOWEVER…

*2022-10-27, version 4.0*

Love all the info this app provides, however by default it shows info for the NEXT day, NOT for TODAY.  You can manually go into the date setting each time you check the app and go back one day for accurate today results. (Only discovered by comparing it to other biorhythm app results)

### 1/5 — Connection with the Apple Watch is not working

*2022-06-24*

The application at the beginning didn’t show the correct days old in the Apple Watch although it was correct in the application. I had to uninstall and reinstall the application and is showing now the days but I am receiving in the application that the connection with the Watch is not visible. Although I have the paid version but I am not receiving all the biorhythms at the Watch which is disappointing. Secondly please give us some option to change the colors to be more visible. It is really very difficult to contact the developer, the link provided is only for the application and no clear way to send an email to the developer

### 2/5 — Biorhythm so so

*2022-02-09*

Extremely poor method of entering birthdays. But plot is ok

### 5/5 — Works Well!

*2022-01-09*

There are some old reviews noting some problems.   I’ve had the app as long as some of those bad reviews and there certainly were some issues.   But the app has worked perfectly for over a year.   I just decided to write a review as I was recommending it to others and noticed the poor review scores.   I don’t think those are warranted anymore.

Anyway, this is the only app that I found (when searing in the past) that provided both a tabular and graphical biorhythm view.   The widget works well.   The app works well.   I have not tried it for the watch.   

All-in-all, I recommend the app.

### 1/5 — Shows wrong date on graph

*2021-11-07, version 3.02*

Always shows one day behind what’s shown in the current date. I.e. today’s date is shown as 7th November but the graph shows 6th November!

## Frequently asked questions about myBiorythm

### What is myBiorhythm?

myBiorhythm is an application that visualizes your personal biorhythm cycles, including mental, physical, and emotional activity, based on your birthday. It helps you understand your predicted ability levels for any given day and year.

### What are the key features of myBiorhythm?

Key features include visualizing biorhythms for specific dates, an overview of the best and worst days of the year, an Apple Watch app for quick access to percentages and icons, a database to store and manage multiple birthdays, and a group module to view median values for groups of people.

### How much does myBiorhythm cost?

The app offers a free version that provides primary biorhythm values. Users can upgrade to the full version via an in-app purchase to access additional values, combined lines, and a view showing the best and worst days of the year.

### What is the theory behind biorhythms?

The theory of Biorhythms suggests that a person's life is influenced by rhythmic biological cycles (mental, physical, emotional) that begin at birth and oscillate throughout life. By modeling these cycles mathematically, the app aims to predict a person's ability levels in various domains on a day-to-day basis.

### Can I use myBiorhythm on my Apple Watch?

Yes, there is a separate Apple Watch app that allows you to view your current biorhythm percentages and icons directly on your watch. You can see this information in a table view or as a complication for quick glances.

## Version history (last 5 releases)

### 5.2 — 2026-04-01

- minor bugfix in the calculation for the graphs

### 5..1 — 2026-03-26

- some minor bugfixes and code cleanup for improved background performance

### 5.0.15 — 2025-12-08

- fixed a bug in Charts that could lead to the App hanging, while trying to create the chart

### 5.0.14 — 2025-11-03

- some minor bugfixes to resolve some churns in executing the code

### 5.0.13 — 2025-09-30

- minor bug fixes
- added App Review request

## Apps similar to myBiorythm

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Biorhythm - Chart Of Your Life](https://appshunter.io/ios/app/biorhythm-chart-of-your-life/id1140466863) | 4.3 (83) | Free | Health & Fitness |
| [Biorhythm -body, mental record](https://appshunter.io/ios/app/biorhythm-body-mental-record/id1435235951) | — | Free | Health & Fitness |
| [Biorhythmmm](https://appshunter.io/ios/app/biorhythmmm/id6737791240) | 4.3 (3) | Free | Health & Fitness |
| [Daily Biorhythm](https://appshunter.io/ios/app/daily-biorhythm/id1021258071) | 4.9 (18) | Free | Health & Fitness |
| [Biorhythm Alertness](https://appshunter.io/ios/app/biorhythm-alertness/id1351359147) | 2.0 (4) | Free | Health & Fitness |
| [Binaural Beats: Sleep & Heal](https://appshunter.io/ios/app/binaural-beats-sleep-and-heal/id838752522) | 4.3 (1,539) | Free | Health & Fitness |

## More apps by xis int. ag

- [Sudoku Solver (en)](https://appshunter.io/ios/app/sudoku-solver-en/id331701097)
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- [myAscendent](https://appshunter.io/ios/app/myascendent/id421998511)
- [myPlants](https://appshunter.io/ios/app/myplants/id576750927)
- [myWeek3](https://appshunter.io/ios/app/myweek3/id596681364)
- [mySteps](https://appshunter.io/ios/app/mysteps/id791498451)

All apps by xis int. ag: https://appshunter.io/developer/331701100

## Related topics

[biorhythm](https://appshunter.io/ios/topics/biorhythm)

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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 2026-07-27.*