# Trimix Tools vs Dive Calculator

The clearest difference is price: Dive Calculator at Free against Trimix Tools's $6.99. Dive Calculator also leads on ratings volume (24 vs 5) and iOS requirement (6.0 vs 15.6). Trimix Tools's advantage is in-app purchases (none vs 2) and rating (5.0 vs 4.6). On review sentiment, ads and device support there is nothing between them.

Dive Calculator is free to download; Trimix Tools costs $6.99 up front. Dive Calculator sells 2 one-off in-app purchases. Trimix Tools asks for nothing beyond the download.

Trimix Tools holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 5 and 24 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Trimix Tools ships an update every 5 months, Dive Calculator every 12 months. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Trimix Tools | Dive Calculator |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/trimix-tools/id289220808/reviews)** | [4.6 (24 ratings)](https://appshunter.io/ios/app/dive-calculator/id831751437/reviews) |
| Number of ratings | 5 | **24** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 12 months |
| Monetization | Paid | **Free** |
| Size | 6 MB | 7 MB |
| Requires iOS | 15.6 | **6.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Zanthic Automation Inc.](https://appshunter.io/developer/574695320) |

## 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


### Dive Calculator

[App page](https://appshunter.io/ios/app/dive-calculator/id831751437)

This app provides comprehensive scuba diving calculations, including basic, nitrox, and trimix gas mixes. It supports both metric and imperial units, and allows for gas volume and cost calculations for blending and top-ups. Results can be easily copied for documentation.

**Highlights:** Basic, Nitrox, and Trimix calculations, Gas volume and cost calculations, Top-up and bleed down mix calculations, Metric and imperial unit support, Oxygen narcotic/non-narcotic selection, Copy results to clipboard

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EANx Calculations | $0.99 | one-time |
| Trimix Calculations | $0.99 | one-time |


## Frequently asked questions

### Is Trimix Tools free?

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

### Is Dive Calculator free?

Dive Calculator is free to download, with in-app purchases available.

### Which has better reviews, Trimix Tools or Dive Calculator?

Trimix Tools is rated higher. Trimix Tools averages 5.0 out of 5 from 5 ratings, while Dive Calculator averages 4.6 from 24 ratings.

### Do Trimix Tools or Dive Calculator have ads?

Neither Trimix Tools nor Dive Calculator shows ads.

### Which is updated more often, Trimix Tools or Dive Calculator?

Trimix Tools ships an update every 5 months, and Dive Calculator every 12 months. Most recently, Trimix Tools was updated on October 14, 2026 and Dive Calculator on October 8, 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.*