# Concentrations vs CloudLabs Ester Synthesis

The clearest difference is update cadence: Concentrations at every 3 months against CloudLabs Ester Synthesis's every 30 months. CloudLabs Ester Synthesis'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 Ester Synthesis every 30 months. The most recent releases landed on October 17, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Concentrations | CloudLabs Ester Synthesis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 30 months |
| Size | 7 MB | 94 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 Ester Synthesis

[App page](https://appshunter.io/ios/app/cloudlabs-ester-synthesis/id1596523427)

**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 Ester Synthesis free?

CloudLabs Ester Synthesis is free to download, with no in-app purchases.

### Do Concentrations or CloudLabs Ester Synthesis have ads?

Neither Concentrations nor CloudLabs Ester Synthesis shows ads.

### Which is updated more often, Concentrations or CloudLabs Ester Synthesis?

Concentrations ships an update every 3 months, and CloudLabs Ester Synthesis every 30 months. Most recently, Concentrations was updated on October 17, 2026 and CloudLabs Ester Synthesis on October 27, 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.*