# Halcyon Dive Systems vs Submersion Dive Log

The clearest difference is rating: Halcyon Dive Systems at 5.0 against Submersion Dive Log's 4.6. Submersion Dive Log's advantage is update cadence (every 4 days vs every 2 weeks) and monetization model (free vs ad-supported). On price, ratings volume, ads and in-app purchases 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 holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 8 and 12 respectively.

Halcyon Dive Systems ships an update every 2 weeks, Submersion Dive Log every 4 days. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Halcyon Dive Systems | Submersion Dive Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/halcyon-dive-systems-diving/id6738069654/reviews)** | [4.6 (12 ratings)](https://appshunter.io/ios/app/submersion-dive-log/id6757456915/reviews) |
| Number of ratings | 8 | **12** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Ad-supported | **Free** |
| Size | 159 MB | 155 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Halcyon Dive Systems](https://appshunter.io/developer/1779189368) | [Eric Griffin](https://appshunter.io/developer/1867101718) |

## 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


### Submersion Dive Log

[App page](https://appshunter.io/ios/app/submersion-dive-log/id6757456915)

This app is a comprehensive, open-source dive log for recreational and technical divers. It allows users to track unlimited dives, manage gear, analyze trends, and export data. The app offers dive computer integration, advanced profile analysis, and detailed logging for various dive types and conditions.

**Highlights:** Log unlimited dives with detailed conditions, Dive computer integration, Advanced profile analysis, Technical diving support, Gear and equipment management, Dive site database with maps, Marine life tracking

**Features:** Vision Pro support

**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 Submersion Dive Log free?

Submersion Dive Log is free to download, with no in-app purchases.

### Which has better reviews, Halcyon Dive Systems or Submersion Dive Log?

Halcyon Dive Systems is rated higher. Halcyon Dive Systems averages 5.0 out of 5 from 8 ratings, while Submersion Dive Log averages 4.6 from 12 ratings.

### Do Halcyon Dive Systems or Submersion Dive Log have ads?

Neither Halcyon Dive Systems nor Submersion Dive Log shows ads.

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

Halcyon Dive Systems ships an update every 2 weeks, and Submersion Dive Log every 4 days. Most recently, Halcyon Dive Systems was updated on October 4, 2026 and Submersion Dive Log on October 8, 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.*