# Biorhythm Calculator Simple vs BabyPattern

The clearest difference is update cadence: BabyPattern at every 3 days against Biorhythm Calculator Simple's every 10 months. Biorhythm Calculator Simple's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Biorhythm Calculator Simple ships an update every 10 months, BabyPattern every 3 days. The most recent releases landed on September 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Biorhythm Calculator Simple | BabyPattern |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 3 days** |
| Size | 17 MB | 24 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kouji Yamauchi](https://appshunter.io/developer/1519365107) | [sunho ko](https://appshunter.io/developer/6794600341) |

## What reviewers say

### Biorhythm Calculator Simple

[App page](https://appshunter.io/ios/app/biorhythm-calculator-simple/id1542322175)

**Features:** macOS Compatibility

**In-app purchases:** none


### BabyPattern

[App page](https://appshunter.io/ios/app/babypattern/id6794873696)

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

**In-app purchases:** none


## Frequently asked questions

### Is Biorhythm Calculator Simple free?

Biorhythm Calculator Simple is free to download, with no in-app purchases.

### Is BabyPattern free?

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

### Do Biorhythm Calculator Simple or BabyPattern have ads?

Both Biorhythm Calculator Simple and BabyPattern show ads.

### Which is updated more often, Biorhythm Calculator Simple or BabyPattern?

Biorhythm Calculator Simple ships an update every 10 months, and BabyPattern every 3 days. Most recently, Biorhythm Calculator Simple was updated on September 19, 2026 and BabyPattern on October 11, 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.*