# Concept Barre vs When Nature Calls Biohacking

The clearest difference is ads: When Nature Calls Biohacking at none against Concept Barre's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Concept Barre | When Nature Calls Biohacking |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Size | 129 MB | 51 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [BARRE CONCEPT S.L.](https://appshunter.io/developer/1718933667) | [When Nature Calls Biohacking Center BV](https://appshunter.io/developer/1771879032) |

## What reviewers say

### Concept Barre

[App page](https://appshunter.io/ios/app/concept-barre/id6473445768)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### When Nature Calls Biohacking

[App page](https://appshunter.io/ios/app/when-nature-calls-biohacking/id6798232872)

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

**In-app purchases:** none


## Frequently asked questions

### Is Concept Barre free?

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

### Is When Nature Calls Biohacking free?

When Nature Calls Biohacking is free to download, with no in-app purchases.

### Do Concept Barre or When Nature Calls Biohacking have ads?

Concept Barre shows ads; When Nature Calls Biohacking does not.

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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.*