# Trimix Tools vs AON2 X2

The clearest difference is review sentiment: Trimix Tools at 100% against AON2 X2's 0%. Trimix Tools also leads on rating (5.0 vs 2.5) and chart position (#105 vs unranked). AON2 X2's advantage is price (Free vs $6.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

AON2 X2 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 holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 5 and 8 respectively. Written reviews point the same way: 100% of Trimix Tools's written reviews are positive against 0% of AON2 X2's.

Trimix Tools ships an update every 5 months, AON2 X2 every 6 months. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Trimix Tools | AON2 X2 |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/trimix-tools/id289220808/reviews)** | [2.5 (8 ratings)](https://appshunter.io/ios/app/aon2-x2/id1444878947/reviews) |
| Number of ratings | 5 | **8** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#105** | — |
| Size | 6 MB | 33 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [AON2 LTD](https://appshunter.io/developer/1444878946) |

## What reviewers say

### Trimix Tools

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

**Currently charting:** #105 Top Paid · Sports (US App Store)

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


### AON2 X2

[App page](https://appshunter.io/ios/app/aon2-x2/id1444878947)

This app connects to a specific device to log jumps, set drop zones, and adjust device settings. It offers GPS waypoint functionality for global use.

**Highlights:** Bluetooth device connection, View jump logs, Set drop zones, Set GPS waypoints, Change device settings

**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 AON2 X2 free?

AON2 X2 is free to download, with no in-app purchases.

### Which has better reviews, Trimix Tools or AON2 X2?

Trimix Tools is rated higher. Trimix Tools averages 5.0 out of 5 from 5 ratings, while AON2 X2 averages 2.5 from 8 ratings.

### Do Trimix Tools or AON2 X2 have ads?

Neither Trimix Tools nor AON2 X2 shows ads.

### Which is updated more often, Trimix Tools or AON2 X2?

Trimix Tools ships an update every 5 months, and AON2 X2 every 6 months. Most recently, Trimix Tools was updated on September 10, 2026 and AON2 X2 on June 1, 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.*