# Trimix Tools vs Decosoft

The clearest difference is price: Decosoft at Free against Trimix Tools's $6.99. Decosoft also leads on update cadence (every 2 weeks vs every 5 months). Trimix Tools's advantage is in-app purchases (none vs 8) and chart position (#59 vs unranked). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Decosoft is free to download; Trimix Tools costs $6.99 up front. Decosoft sells 8 in-app purchases, starting at $3.99 per month. Trimix Tools asks for nothing beyond the download.

Trimix Tools ships an update every 5 months, Decosoft every 2 weeks. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Trimix Tools | Decosoft |
| --- | --- | --- |
| 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 | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#59** | — |
| Size | 6 MB | 47 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mclaughlin](https://appshunter.io/developer/284919983) | [Decosoft s.r.o.](https://appshunter.io/developer/674555865) |

## What reviewers say

### Trimix Tools

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

**Currently charting:** #59 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


### Decosoft

[App page](https://appshunter.io/ios/app/decosoft/id6453846218)

Plan your dives with this comprehensive tech diving tool. It offers a user-friendly interface, advanced decompression models, and various dive calculators to ensure safe and enjoyable underwater adventures. Save, share, and prepare for every dive with detailed insights.

**Highlights:** User-friendly dive planning interface, Bühlmann decompression model, Detailed runtime table with graphs, Support for OC and CCR, Multiple dive calculators, Save and share dive plans

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Partner | $3.99 | per month |
| Monthly | $3.99 | per month |
| Annual Partners | $39.99 | per year |
| Ultimate | $39.99 | per year |
| Ultimate Offer | $39.99 | per year |
| Ultimate | $20.99 | one-time |
| Ultimate | $23.99 | one-time |
| Ultimate | $29.99 | one-time |


## Frequently asked questions

### Is Trimix Tools free?

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

### Is Decosoft free?

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

### Do Trimix Tools or Decosoft have ads?

Neither Trimix Tools nor Decosoft shows ads.

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

Trimix Tools ships an update every 5 months, and Decosoft every 2 weeks. Most recently, Trimix Tools was updated on September 10, 2026 and Decosoft on September 21, 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.*