# Roughness vs Electrolyte Equilibria

The clearest difference is update cadence: Electrolyte Equilibria at every 3 months against Roughness's every 14 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Roughness ships an update every 14 months, Electrolyte Equilibria every 3 months. The most recent releases landed on October 6, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Roughness | Electrolyte Equilibria |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Size | 26 MB | 108 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Carl Zeiss AG](https://appshunter.io/developer/488066215) | [Oleksandr Rubtsov](https://appshunter.io/developer/1823549572) |

## What reviewers say

### Roughness

[App page](https://appshunter.io/ios/app/roughness/id1356085703)

**In-app purchases:** none


### Electrolyte Equilibria

[App page](https://appshunter.io/ios/app/electrolyte-equilibria/id6754345279)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Roughness free?

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

### Is Electrolyte Equilibria free?

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

### Do Roughness or Electrolyte Equilibria have ads?

Neither Roughness nor Electrolyte Equilibria shows ads.

### Which is updated more often, Roughness or Electrolyte Equilibria?

Roughness ships an update every 14 months, and Electrolyte Equilibria every 3 months. Most recently, Roughness was updated on October 6, 2026 and Electrolyte Equilibria on September 26, 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.*