# Nitrox Tools vs Nitrox Helper

The clearest difference is price: Nitrox Helper at Free against Nitrox Tools's $5.99. Nitrox Tools's advantage is in-app purchases (none vs 4) and chart position (#142 vs unranked). On update cadence and ads there is nothing between them.

Nitrox Helper is free to download; Nitrox Tools costs $5.99 up front. Nitrox Helper sells 4 in-app purchases, starting at $0.99 per month. Nitrox Tools asks for nothing beyond the download.

Nitrox Tools ships an update every 5 months, Nitrox Helper every 9 months. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Nitrox Tools | Nitrox Helper |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 9 months |
| Monetization | Paid | — |
| Best chart rank | **#142** | — |
| Size | 7 MB | 7 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) | [Robert O'Connell](https://appshunter.io/developer/1451300849) |

## What reviewers say

### Nitrox Tools

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

**Currently charting:** #142 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


### Nitrox Helper

[App page](https://appshunter.io/ios/app/nitrox-helper/id1451300850)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro 6 Monthly | $5.99 | per 6 months |
| Pro Annual | $9.99 | per year |
| Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Nitrox Tools free?

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

### Is Nitrox Helper free?

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

### Do Nitrox Tools or Nitrox Helper have ads?

Neither Nitrox Tools nor Nitrox Helper shows ads.

### Which is updated more often, Nitrox Tools or Nitrox Helper?

Nitrox Tools ships an update every 5 months, and Nitrox Helper every 9 months. Most recently, Nitrox Tools was updated on October 17, 2026 and Nitrox Helper on October 2, 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.*