# QO Link vs Octave Projet Voltaire

The clearest difference is update cadence: QO Link at every 9 days against Octave Projet Voltaire's every 2 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.

QO Link ships an update every 9 days, Octave Projet Voltaire every 2 months. The most recent releases landed on October 4, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | QO Link | Octave Projet Voltaire |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Size | 30 MB | 44 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EXATECH](https://appshunter.io/developer/1495662170) | [Woonoz SAS](https://appshunter.io/developer/441061315) |

## What reviewers say

### QO Link

[App page](https://appshunter.io/ios/app/qo-link/id1495662171)

**Features:** macOS Compatibility

**In-app purchases:** none


### Octave Projet Voltaire

[App page](https://appshunter.io/ios/app/octave-projet-voltaire/id6499595366)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is QO Link free?

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

### Is Octave Projet Voltaire free?

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

### Do QO Link or Octave Projet Voltaire have ads?

Neither QO Link nor Octave Projet Voltaire shows ads.

### Which is updated more often, QO Link or Octave Projet Voltaire?

QO Link ships an update every 9 days, and Octave Projet Voltaire every 2 months. Most recently, QO Link was updated on October 4, 2026 and Octave Projet Voltaire on September 11, 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.*