# Diving Log vs Subsurface

The clearest difference is rating: Subsurface at 4.5 against Diving Log's 2.0. Subsurface also leads on update cadence (every 2 months vs every 9 months) and ratings volume (48 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Subsurface holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: Subsurface has 48 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Diving Log's written reviews are positive against 63% of Subsurface's.

Diving Log ships an update every 9 months, Subsurface every 2 months. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Diving Log | Subsurface |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/diving-log/id1091064630/reviews) | **[4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews)** |
| Number of ratings | 3 | **48** |
| Positive reviews | 50.0% of reviews | **63.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 22 MB | 52 MB |
| Requires iOS | 18.0 | **17** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TABATA CO.,LTD.](https://appshunter.io/developer/1091064629) | [Dirk Hohndel](https://appshunter.io/developer/1093217160) |

## What reviewers say

### Diving Log

[App page](https://appshunter.io/ios/app/diving-log/id1091064630)

This app serves as a customizable digital logbook for scuba divers. It allows users to record detailed dive information, including depth, time, location, and environmental conditions. Users can also add photos, instructor signatures, and export logs for social sharing.

**Highlights:** Customizable dive logbook, Record dive details (depth, time, temp), Map dive point locations, Add photos and instructor signatures, Export logs to social media, Graph display of depth intervals

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Diving Log free?

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

### Is Subsurface free?

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

### Which has better reviews, Diving Log or Subsurface?

Subsurface is rated higher. Diving Log averages 2.0 out of 5 from 3 ratings, while Subsurface averages 4.5 from 48 ratings.

### Do Diving Log or Subsurface have ads?

Neither Diving Log nor Subsurface shows ads.

### Which is updated more often, Diving Log or Subsurface?

Diving Log ships an update every 9 months, and Subsurface every 2 months. Most recently, Diving Log was updated on September 21, 2026 and Subsurface on September 18, 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.*