# Trimix Tools vs MaxOpDepth

The clearest difference is price: MaxOpDepth at Free against Trimix Tools's $6.99. MaxOpDepth also leads on iOS requirement (13.0 vs 15.6). Trimix Tools's advantage is update cadence (every 5 months vs every 16 months). On ads, in-app purchases and device support there is nothing between them.

MaxOpDepth is free to download; Trimix Tools costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trimix Tools ships an update every 5 months, MaxOpDepth every 16 months. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Trimix Tools | MaxOpDepth |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/trimix-tools/id289220808/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 16 months |
| Monetization | Paid | — |
| Size | 6 MB | 1 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Jason Klug-Horsnell](https://appshunter.io/developer/1178078495) |

## What reviewers say

### Trimix Tools

[App page](https://appshunter.io/ios/app/trimix-tools/id289220808)

This app provides essential tools for divers to plan and blend Trimix gases. It calculates optimal mixes based on depth, oxygen partial pressure, and equivalent narcotic depth, and supports various cylinder filling scenarios. Calculations are available offline and can be customized with saved settings.

**Highlights:** Trimix blending and planning, Depth and partial pressure calculations, Equivalent Narcotic Depth (END) calculation, Saltwater and freshwater support, Cylinder filling and bleed down calculations, Metric and Imperial system support, Offline functionality, Saved settings and custom mixes

**Features:** Vision Pro support

**In-app purchases:** none


### MaxOpDepth

[App page](https://appshunter.io/ios/app/maxopdepth/id1178078496)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trimix Tools free?

Trimix Tools costs $6.99, with no in-app purchases.

### Is MaxOpDepth free?

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

### Do Trimix Tools or MaxOpDepth have ads?

Neither Trimix Tools nor MaxOpDepth shows ads.

### Which is updated more often, Trimix Tools or MaxOpDepth?

Trimix Tools ships an update every 5 months, and MaxOpDepth every 16 months. Most recently, Trimix Tools was updated on October 14, 2026 and MaxOpDepth 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.*