# Halcyon Dive Systems vs TrimixBlending

The clearest difference is update cadence: Halcyon Dive Systems at every 2 weeks against TrimixBlending's every 14 months. Halcyon Dive Systems also leads on iOS requirement (16.0 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Halcyon Dive Systems ships an update every 2 weeks, TrimixBlending every 14 months. The most recent releases landed on July 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Halcyon Dive Systems | TrimixBlending |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/halcyon-dive-systems-diving/id6738069654/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 14 months |
| Monetization | Ad-supported | — |
| Size | 159 MB | 4 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Halcyon Dive Systems](https://appshunter.io/developer/1779189368) | [Costas Bakopanos](https://appshunter.io/developer/771589110) |

## What reviewers say

### Halcyon Dive Systems

[App page](https://appshunter.io/ios/app/halcyon-dive-systems-diving/id6738069654)

This app helps divers log, track, and share their underwater experiences. It offers integration with dive computers, personalized settings, and a community forum for connecting with other divers.

**Highlights:** Symbios integration for dive computer settings, Detailed dive logging and progress tracking, Social logbook for sharing dive stories, Connect with a global diving community, Personalized dive tips and advice, Exclusive benefits for Halcyon owners

**Features:** macOS Compatibility, Apple Wallet, 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 Halcyon Dive Systems free?

Halcyon Dive Systems is free to download, with no in-app purchases.

### Is TrimixBlending free?

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

### Do Halcyon Dive Systems or TrimixBlending have ads?

Neither Halcyon Dive Systems nor TrimixBlending shows ads.

### Which is updated more often, Halcyon Dive Systems or TrimixBlending?

Halcyon Dive Systems ships an update every 2 weeks, and TrimixBlending every 14 months. Most recently, Halcyon Dive Systems was updated on July 24, 2026 and TrimixBlending on September 23, 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.*