# Nitrox Tools vs Gas Blend Pro

The clearest difference is price: Gas Blend Pro at Free against Nitrox Tools's $5.99. Gas Blend Pro also leads on update cadence (every 5 days vs every 5 months). Nitrox Tools's advantage is chart position (#146 vs unranked) and device support (4 vs 1). On ads and in-app purchases there is nothing between them.

Gas Blend Pro is free to download; Nitrox Tools costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Nitrox Tools ships an update every 5 months, Gas Blend Pro every 5 days. The most recent releases landed on October 21, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Nitrox Tools | Gas Blend Pro |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| 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 5 days** |
| Monetization | Paid | — |
| Best chart rank | **#146** | — |
| Size | 7 MB | 4 MB |
| Requires iOS | **15.6** | 18.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Johannes Six](https://appshunter.io/developer/1851413882) |

## What reviewers say

### Nitrox Tools

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

**Currently charting:** #146 Top Paid · Sports (US App Store)

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 Blend Pro

[App page](https://appshunter.io/ios/app/gas-blend-pro/id6755033081)

**Features:** macOS Compatibility, 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 Blend Pro free?

Gas Blend Pro is free to download, with no in-app purchases.

### Do Nitrox Tools or Gas Blend Pro have ads?

Neither Nitrox Tools nor Gas Blend Pro shows ads.

### Which is updated more often, Nitrox Tools or Gas Blend Pro?

Nitrox Tools ships an update every 5 months, and Gas Blend Pro every 5 days. Most recently, Nitrox Tools was updated on October 21, 2026 and Gas Blend Pro on October 17, 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.*