# Biorhythm Calculator vs Antares BioSync Unit

The clearest difference is device support: Biorhythm Calculator at 3 against Antares BioSync Unit's 1. Biorhythm Calculator also leads on iOS requirement (15.1 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Biorhythm Calculator sells 3 in-app purchases, starting at $7.99 per 7 days and Antares BioSync Unit sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Biorhythm Calculator | Antares BioSync Unit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (13 ratings)](https://appshunter.io/ios/app/biorhythm-calculator-biosync/id6758400277/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 56 MB | 2 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 12+ |
| Developer | [Eiras Labs LLC](https://appshunter.io/developer/1774544882) | [天佑 伍](https://appshunter.io/developer/1846286944) |

## What reviewers say

### Biorhythm Calculator

[App page](https://appshunter.io/ios/app/biorhythm-calculator-biosync/id6758400277)

This app calculates your physical, emotional, and intellectual cycles based on your birthday. It offers daily insights, compatibility tracking with others, and an AI coach to help you optimize energy, mood, and focus.

**Highlights:** Physical, emotional, and intellectual cycle tracking, Daily biorhythm levels visualization, Future date prediction, Compatibility tracking with friends, AI biorhythm coaching, Personalized daily insights

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BioSync: Weekly subscription | $7.99 | per 7 days |
| Discounted yearly susbcription | $24.99 | per year |
| BioSync: Yearly Subscription | $39.99 | per year |


### Antares BioSync Unit

[App page](https://appshunter.io/ios/app/antares-biosync-unit/id6758427016)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $6.99 | one-time |
| Quarterly Membership | $17.99 | one-time |
| Annual Membership | $59.99 | one-time |


## Frequently asked questions

### Is Biorhythm Calculator free?

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

### Is Antares BioSync Unit free?

Antares BioSync Unit is free to download, with in-app purchases available.

### Do Biorhythm Calculator or Antares BioSync Unit have ads?

Neither Biorhythm Calculator nor Antares BioSync Unit shows ads.

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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.*