# Bassoon Note Chart vs Oxyg'App

The clearest difference is price: Oxyg'App at Free against Bassoon Note Chart's $14.99. Oxyg'App also leads on update cadence (every 6 days vs every 42 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Oxyg'App is free to download; Bassoon Note Chart costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bassoon Note Chart ships an update every 42 months, Oxyg'App every 6 days. Both last shipped on October 6, 2026.

## The numbers

| Metric | Bassoon Note Chart | Oxyg'App |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 6 days** |
| Size | 94 MB | 32 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oleg Sokolov](https://appshunter.io/developer/1628122395) | [L'Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ)](https://appshunter.io/developer/576953454) |

## What reviewers say

### Bassoon Note Chart

[App page](https://appshunter.io/ios/app/bassoon-note-chart/id1658155552)

**Features:** macOS Compatibility

**In-app purchases:** none


### Oxyg'App

[App page](https://appshunter.io/ios/app/oxygapp/id1668892646)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bassoon Note Chart free?

Bassoon Note Chart costs $14.99, with no in-app purchases.

### Is Oxyg'App free?

Oxyg'App is free to download, with no in-app purchases.

### Do Bassoon Note Chart or Oxyg'App have ads?

Neither Bassoon Note Chart nor Oxyg'App shows ads.

### Which is updated more often, Bassoon Note Chart or Oxyg'App?

Bassoon Note Chart ships an update every 42 months, and Oxyg'App every 6 days. Most recently, Bassoon Note Chart was updated on October 6, 2026 and Oxyg'App on October 6, 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.*