# Subsurface vs Submersion Dive Log

The clearest difference is update cadence: Submersion Dive Log at every 4 days against Subsurface's every 2 months. Submersion Dive Log also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17). Subsurface's advantage is ratings volume (48 vs 12). On price, rating, review sentiment and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.5 for Subsurface against 4.6 for Submersion Dive Log. Both are backed by a comparable volume of ratings — 48 and 12 respectively. Written reviews are what separate them: 63% of Subsurface's written reviews are positive against 67% of Submersion Dive Log's.

Subsurface ships an update every 2 months, Submersion Dive Log every 4 days. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Subsurface | Submersion Dive Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews) | **[4.6 (12 ratings)](https://appshunter.io/ios/app/submersion-dive-log/id6757456915/reviews)** |
| Number of ratings | **48** | 12 |
| Positive reviews | 63.3% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 52 MB | 155 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Hohndel](https://appshunter.io/developer/1093217160) | [Eric Griffin](https://appshunter.io/developer/1867101718) |

## What reviewers say

### Subsurface

[App page](https://appshunter.io/ios/app/subsurface-mobile/id1093217161)

This application allows divers to manage their dive logs on their mobile devices. It supports editing dive data and downloading new information from compatible dive computers. Optional cloud synchronization is available for seamless data transfer with desktop versions.

**Highlights:** Mobile dive log management, Edit dive data, Download from Bluetooth LE dive computers, Optional cloud synchronization, Open-source and free

**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 Subsurface free?

Subsurface 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, Subsurface or Submersion Dive Log?

Submersion Dive Log is rated higher. Subsurface averages 4.5 out of 5 from 48 ratings, while Submersion Dive Log averages 4.6 from 12 ratings.

### Do Subsurface or Submersion Dive Log have ads?

Neither Subsurface nor Submersion Dive Log shows ads.

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

Subsurface ships an update every 2 months, and Submersion Dive Log every 4 days. Most recently, Subsurface was updated on October 6, 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.*