# Biorhythm Alertness vs Biorhythmmm

The clearest difference is review sentiment: Biorhythmmm at 100% against Biorhythm Alertness's 0%. Biorhythmmm also leads on rating (4.3 vs 2.0) and in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Biorhythm Alertness sells 1 one-off in-app purchase. Biorhythmmm asks for nothing beyond the download.

Biorhythmmm holds the better App Store score, 4.3 against 2.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 0% of Biorhythm Alertness's written reviews are positive against 100% of Biorhythmmm's.

Biorhythm Alertness ships an update every 5 weeks, Biorhythmmm every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Biorhythm Alertness | Biorhythmmm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/biorhythm-alertness/id1351359147/reviews) | **[4.3 (3 ratings)](https://appshunter.io/ios/app/biorhythmmm/id6737791240/reviews)** |
| Number of ratings | **4** | 3 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 5 MB | 23 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bodnar Marin](https://appshunter.io/developer/1344307163) | [Nathanatos Software](https://appshunter.io/developer/342122921) |

## What reviewers say

### Biorhythm Alertness

[App page](https://appshunter.io/ios/app/biorhythm-alertness/id1351359147)

This app tracks your physical, emotional, intellectual, and intuitive biological cycles. It provides visual graphs of these rhythms and notifies you of critical days when your vulnerability is highest. Easily manage multiple user profiles for family and friends.

**Highlights:** Multi-user profile support, Visualizations of physical, emotional, intellectual, and intuitive rhythms, Critical day notifications, Toggle display for individual rhythm curves, Simple registration with name and birthdate, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biorhythm Alerter | $0.99 | one-time |


### Biorhythmmm

[App page](https://appshunter.io/ios/app/biorhythmmm/id6737791240)

Visualize your personal biorhythm cycles with interactive graphs. Explore past and future trends to understand how intellectual, emotional, and physical cycles might influence your daily life. Add cycles for family and friends.

**Highlights:** Interactive biorhythm graphs, Past and future cycle exploration, Intellectual, emotional, and physical cycles, Support for secondary cycles, Add cycles for family and friends

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Biorhythm Alertness free?

Biorhythm Alertness is free to download, with in-app purchases available.

### Is Biorhythmmm free?

Biorhythmmm is free to download, with no in-app purchases.

### Which has better reviews, Biorhythm Alertness or Biorhythmmm?

Biorhythmmm is rated higher. Biorhythm Alertness averages 2.0 out of 5 from 4 ratings, while Biorhythmmm averages 4.3 from 3 ratings.

### Do Biorhythm Alertness or Biorhythmmm have ads?

Neither Biorhythm Alertness nor Biorhythmmm shows ads.

### Which is updated more often, Biorhythm Alertness or Biorhythmmm?

Biorhythm Alertness ships an update every 5 weeks, and Biorhythmmm every 2 months. Most recently, Biorhythm Alertness was updated on October 21, 2026 and Biorhythmmm on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*