# Voltaire Plus vs ERGON

The clearest difference is iOS requirement: ERGON at 16.4 against Voltaire Plus's 18.0. 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.

## The numbers

| Metric | Voltaire Plus | ERGON |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 86 MB | 58 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Voltaire](https://appshunter.io/developer/1524925023) | [Paul Hythier](https://appshunter.io/developer/6805965448) |

## What reviewers say

### Voltaire Plus

[App page](https://appshunter.io/ios/app/voltaire-plus/id6450784238)

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

**In-app purchases:** none


### ERGON

[App page](https://appshunter.io/ios/app/ergon/id6805965446)

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

**In-app purchases:** none


## Frequently asked questions

### Is Voltaire Plus free?

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

### Is ERGON free?

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

### Do Voltaire Plus or ERGON have ads?

Neither Voltaire Plus nor ERGON 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.*