# Nitrox Tools vs Gas*Blender

The clearest difference is price: Gas*Blender at $2.99 against Nitrox Tools's $5.99. Nitrox Tools's advantage is device support (4 vs 2) and iOS requirement (15.6 vs 26.0). On update cadence, ads and in-app purchases there is nothing between them.

Nitrox Tools costs $5.99 and Gas*Blender $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Nitrox Tools ships an update every 5 months, Gas*Blender every 3 months. The most recent releases landed on October 2, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Nitrox Tools | Gas*Blender |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nitrox-tools/id284919980/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 88.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 7 MB | 4 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Martin Schyth](https://appshunter.io/developer/496853774) |

## What reviewers say

### Nitrox Tools

[App page](https://appshunter.io/ios/app/nitrox-tools/id284919980)

This app provides essential tools for divers to plan and blend enriched air nitrox. It calculates dive parameters like equivalent air depth and maximum operating depth, and supports various blending methods for custom gas mixes. Easily switch between metric and imperial units and save custom settings for frequent use.

**Highlights:** Enriched air nitrox blending, Dive planning calculations, Equivalent Air Depth (EAD), Partial Pressure of Oxygen (PPO2), Maximum Operating Depth (MOD), Save custom mixes and settings, Metric/Imperial unit switching

**Features:** Vision Pro support

**In-app purchases:** none


### Gas*Blender

[App page](https://appshunter.io/ios/app/gasblender/id496853771)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Nitrox Tools free?

Nitrox Tools costs $5.99, with no in-app purchases.

### Is Gas*Blender free?

Gas*Blender costs $2.99, with no in-app purchases.

### Do Nitrox Tools or Gas*Blender have ads?

Neither Nitrox Tools nor Gas*Blender shows ads.

### Which is updated more often, Nitrox Tools or Gas*Blender?

Nitrox Tools ships an update every 5 months, and Gas*Blender every 3 months. Most recently, Nitrox Tools was updated on October 2, 2026 and Gas*Blender on September 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*