# Nitrox Tools vs Gas Blender Toolkit

The clearest difference is rating: Nitrox Tools at 5.0 against Gas Blender Toolkit's 3.0. Nitrox Tools also leads on review sentiment (88% vs 60%). Gas Blender Toolkit's advantage is update cadence (every 9 days vs every 5 months) and price ($2.99 vs $5.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

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

Nitrox Tools holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 88% of Nitrox Tools's written reviews are positive against 60% of Gas Blender Toolkit's.

Nitrox Tools ships an update every 5 months, Gas Blender Toolkit every 9 days. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Nitrox Tools | Gas Blender Toolkit |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nitrox-tools/id284919980/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/gas-blender-toolkit/id1467768490/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | **88.5% of reviews** | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 7 MB | 3 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Oleg Gurevich](https://appshunter.io/developer/1467768489) |

## 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 Toolkit

[App page](https://appshunter.io/ios/app/gas-blender-toolkit/id1467768490)

This comprehensive toolkit assists scuba divers in calculating and blending various gas mixtures like trimix, nitrox, and heliox. It offers features for both partial pressure and continuous blending, cost calculation, and utilizes ideal and real gas models for accuracy. Optimized for larger screens, it serves as a successor to a previous diving application.

**Highlights:** Partial pressure blending, Continuous blending, Trimix, nitrox, heliox calculations, Ideal and real gas models, Cost calculation, Top off from storage

**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 Blender Toolkit free?

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

### Which has better reviews, Nitrox Tools or Gas Blender Toolkit?

Nitrox Tools is rated higher. Nitrox Tools averages 5.0 out of 5 from 4 ratings, while Gas Blender Toolkit averages 3.0 from 2 ratings.

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

Neither Nitrox Tools nor Gas Blender Toolkit shows ads.

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

Nitrox Tools ships an update every 5 months, and Gas Blender Toolkit every 9 days. Most recently, Nitrox Tools was updated on September 23, 2026 and Gas Blender Toolkit on September 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.*