# Nitrox by Envivia vs Raid Analyser

The clearest difference is in-app purchases: Raid Analyser at none against Nitrox by Envivia's 4. Raid Analyser also leads on update cadence (every 9 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Nitrox by Envivia sells 4 in-app purchases, starting at $9.99 per year. Raid Analyser asks for nothing beyond the download.

Nitrox by Envivia ships an update every 6 weeks, Raid Analyser every 9 days. The most recent releases landed on August 29, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Nitrox by Envivia | Raid Analyser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nitrox-by-envivia/id1613770132/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 72 MB | 48 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [ENVIVIA](https://appshunter.io/developer/1583628615) | [Gianmichele Iaria](https://appshunter.io/developer/1718432648) |

## What reviewers say

### Nitrox by Envivia

[App page](https://appshunter.io/ios/app/nitrox-by-envivia/id1613770132)

This app is a premium digital guide for Nitrox diving, offering educational content and calculation tools to optimize dives. It helps divers understand oxygen limits, plan dives using gradient factors, and prepare for certification.

**Highlights:** Calculate MOD (Maximum Operating Depth), Manage oxygen partial pressure (PPO₂), Optimize Nitrox dive planning, Understand oxygen-related physiological limits, Prepare for Nitrox certification, Multilingual support

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $9.99 | per year |
| Thank you | $1.99 | one-time |
| Popular | $9.99 | one-time |
| Generous | $49.99 | one-time |


### Raid Analyser

[App page](https://appshunter.io/ios/app/raid-analyser/id6754834525)

**In-app purchases:** none


## Frequently asked questions

### Is Nitrox by Envivia free?

Nitrox by Envivia is free to download, with in-app purchases available.

### Is Raid Analyser free?

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

### Do Nitrox by Envivia or Raid Analyser have ads?

Neither Nitrox by Envivia nor Raid Analyser shows ads.

### Which is updated more often, Nitrox by Envivia or Raid Analyser?

Nitrox by Envivia ships an update every 6 weeks, and Raid Analyser every 9 days. Most recently, Nitrox by Envivia was updated on August 29, 2026 and Raid Analyser on September 10, 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.*