# Gas Blender Toolkit vs TrimixBlending

The clearest difference is price: TrimixBlending at Free against Gas Blender Toolkit's $2.99. Gas Blender Toolkit's advantage is update cadence (every 9 days vs every 14 months) and iOS requirement (15.0 vs 26.5). On ads, in-app purchases and device support there is nothing between them.

TrimixBlending is free to download; Gas Blender Toolkit costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gas Blender Toolkit ships an update every 9 days, TrimixBlending every 14 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Gas Blender Toolkit | TrimixBlending |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/gas-blender-toolkit/id1467768490/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 14 months |
| Monetization | Paid | — |
| Size | 3 MB | 4 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oleg Gurevich](https://appshunter.io/developer/1467768489) | [Costas Bakopanos](https://appshunter.io/developer/771589110) |

## What reviewers say

### Gas Blender Toolkit

[App page](https://appshunter.io/ios/app/gas-blender-toolkit/id1467768490)

This comprehensive toolkit assists scuba divers in calculating and blending various gas mixtures like trimix, nitrox, and heliox. It offers features for both partial pressure and continuous blending, cost calculation, and utilizes ideal and real gas models for accuracy. Optimized for larger screens, it serves as a successor to a previous diving application.

**Highlights:** Partial pressure blending, Continuous blending, Trimix, nitrox, heliox calculations, Ideal and real gas models, Cost calculation, Top off from storage

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

**In-app purchases:** none


### TrimixBlending

[App page](https://appshunter.io/ios/app/trimixblending/id6749371808)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gas Blender Toolkit free?

Gas Blender Toolkit costs $2.99, with no in-app purchases.

### Is TrimixBlending free?

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

### Do Gas Blender Toolkit or TrimixBlending have ads?

Neither Gas Blender Toolkit nor TrimixBlending shows ads.

### Which is updated more often, Gas Blender Toolkit or TrimixBlending?

Gas Blender Toolkit ships an update every 9 days, and TrimixBlending every 14 months. Most recently, Gas Blender Toolkit was updated on November 6, 2026 and TrimixBlending on November 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*