# Concentrations vs CloudLabs Weak Acids and Bases

The clearest difference is update cadence: Concentrations at every 3 months against CloudLabs Weak Acids and Bases's every 27 months. CloudLabs Weak Acids and Bases's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 18.5). 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.

Concentrations ships an update every 3 months, CloudLabs Weak Acids and Bases every 27 months. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Concentrations | CloudLabs Weak Acids and Bases |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 27 months |
| Size | 7 MB | 79 MB |
| Requires iOS | 18.5 | **9.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marcal Casas Cartagena](https://appshunter.io/developer/468150889) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### Concentrations

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

**In-app purchases:** none


### CloudLabs Weak Acids and Bases

[App page](https://appshunter.io/ios/app/cloudlabs-weak-acids-and-bases/id1596507143)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Concentrations free?

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

### Is CloudLabs Weak Acids and Bases free?

CloudLabs Weak Acids and Bases is free to download, with no in-app purchases.

### Do Concentrations or CloudLabs Weak Acids and Bases have ads?

Neither Concentrations nor CloudLabs Weak Acids and Bases shows ads.

### Which is updated more often, Concentrations or CloudLabs Weak Acids and Bases?

Concentrations ships an update every 3 months, and CloudLabs Weak Acids and Bases every 27 months. Most recently, Concentrations was updated on October 17, 2026 and CloudLabs Weak Acids and Bases on October 16, 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.*