# Concentrations vs BioCalc Lab

The clearest difference is price: Concentrations at Free against BioCalc Lab's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Concentrations is free to download; BioCalc Lab costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Concentrations | BioCalc Lab |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 7 MB | 3 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Marcal Casas Cartagena](https://appshunter.io/developer/468150889) | [长贵 周](https://appshunter.io/developer/6779968395) |

## What reviewers say

### Concentrations

[App page](https://appshunter.io/ios/app/concentrations/id468150886)

**In-app purchases:** none


### BioCalc Lab

[App page](https://appshunter.io/ios/app/biocalc-lab/id6783615295)

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

**In-app purchases:** none


## Frequently asked questions

### Is Concentrations free?

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

### Is BioCalc Lab free?

BioCalc Lab costs $0.99, with no in-app purchases.

### Do Concentrations or BioCalc Lab have ads?

Neither Concentrations nor BioCalc Lab 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.*