# Concentrations vs Element OTG

The clearest difference is ads: Concentrations at none against Element OTG's shown. Element OTG's advantage is update cadence (monthly vs every 3 months) and device support (3 vs 1). On price 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, Element OTG monthly. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Concentrations | Element OTG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Size | 7 MB | 25 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marcal Casas Cartagena](https://appshunter.io/developer/468150889) | [Japality Limited](https://appshunter.io/developer/1574046707) |

## What reviewers say

### Concentrations

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

**In-app purchases:** none


### Element OTG

[App page](https://appshunter.io/ios/app/element-otg/id6749494404)

**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 Element OTG free?

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

### Do Concentrations or Element OTG have ads?

Element OTG shows ads; Concentrations does not.

### Which is updated more often, Concentrations or Element OTG?

Concentrations ships an update every 3 months, and Element OTG monthly. Most recently, Concentrations was updated on October 1, 2026 and Element OTG on October 3, 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.*