# Biorhythm Graph vs MutLab

The clearest difference is price: MutLab at Free against Biorhythm Graph's $0.99. MutLab also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

MutLab is free to download; Biorhythm Graph costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Biorhythm Graph ships an update every 6 months, MutLab every 2 months. Both last shipped on September 21, 2026.

## The numbers

| Metric | Biorhythm Graph | MutLab |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/biorhythm-graph/id893875754/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 11 MB | 60 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shuji Fukumoto](https://appshunter.io/developer/286423439) | [Mutlab](https://appshunter.io/developer/1363984051) |

## What reviewers say

### Biorhythm Graph

[App page](https://appshunter.io/ios/app/biorhythm-graph/id893875754)

Visualize personal biorhythm cycles with detailed graphs. Supports integration with Today Extension and Apple Watch for convenient access. Track multiple individuals' cycles easily.

**Highlights:** Display multiple biorhythm graphs, Support Today Extension, Apple Watch app support, Complication support, Granse support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### MutLab

[App page](https://appshunter.io/ios/app/mutlab/id1576343740)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Biorhythm Graph free?

Biorhythm Graph costs $0.99, with no in-app purchases.

### Is MutLab free?

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

### Do Biorhythm Graph or MutLab have ads?

Neither Biorhythm Graph nor MutLab shows ads.

### Which is updated more often, Biorhythm Graph or MutLab?

Biorhythm Graph ships an update every 6 months, and MutLab every 2 months. Most recently, Biorhythm Graph was updated on September 21, 2026 and MutLab on September 21, 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.*