# Biorhythm Graph vs Kronx

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

Kronx 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, Kronx weekly. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Biorhythm Graph | Kronx |
| --- | --- | --- |
| 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 | **Weekly** |
| Monetization | Paid | — |
| Size | 11 MB | 13 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shuji Fukumoto](https://appshunter.io/developer/286423439) | [Elevon.io](https://appshunter.io/developer/1764280283) |

## 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


### Kronx

[App page](https://appshunter.io/ios/app/kronx/id6742023514)

**In-app purchases:** none


## Frequently asked questions

### Is Biorhythm Graph free?

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

### Is Kronx free?

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

### Do Biorhythm Graph or Kronx have ads?

Neither Biorhythm Graph nor Kronx shows ads.

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

Biorhythm Graph ships an update every 6 months, and Kronx weekly. Most recently, Biorhythm Graph was updated on October 17, 2026 and Kronx on October 14, 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.*