# Trimix Tools vs Dive Check

The clearest difference is review sentiment: Trimix Tools at 100% against Dive Check's 50%. Trimix Tools also leads on rating (5.0 vs 1.0) and in-app purchases (none vs 1). Dive Check's advantage is price (Free vs $6.99) and update cadence (every 4 days vs every 4 months). On ratings volume, ads and device support there is nothing between them.

Dive Check is free to download; Trimix Tools costs $6.99 up front. Dive Check sells 1 one-off in-app purchase. Trimix Tools asks for nothing beyond the download.

Trimix Tools holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 100% of Trimix Tools's written reviews are positive against 50% of Dive Check's.

Trimix Tools ships an update every 4 months, Dive Check every 4 days. The most recent releases landed on November 10, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Trimix Tools | Dive Check |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/trimix-tools/id289220808/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/dive-check/id1098927489/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 7 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [AXIS Productions](https://appshunter.io/developer/472646203) |

## 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 Check

[App page](https://appshunter.io/ios/app/dive-check/id1098927489)

Create and share comprehensive gear checklists for diving trips. Ensure nothing is forgotten with customizable lists and reminders. Perfect for divers, snorkelers, and anyone carrying extensive equipment.

**Highlights:** Create custom checklists, Share lists with friends, Set reminders, Use default checklists, Edit and modify lists, Add new items

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dive Check Full Version | $2.99 | one-time |


## Frequently asked questions

### Is Trimix Tools free?

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

### Is Dive Check free?

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

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

Trimix Tools is rated higher. Trimix Tools averages 5.0 out of 5 from 5 ratings, while Dive Check averages 1.0 from 2 ratings.

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

Neither Trimix Tools nor Dive Check shows ads.

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

Trimix Tools ships an update every 4 months, and Dive Check every 4 days. Most recently, Trimix Tools was updated on November 10, 2026 and Dive Check on November 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.*