# Subsurface vs Dive Log

The clearest difference is review sentiment: Subsurface at 63% against Dive Log's 0%. Subsurface also leads on rating (4.5 vs 3.0) and in-app purchases (none vs 4). Dive Log's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Dive Log sells 4 in-app purchases, starting at $7.99 per 7 days. Subsurface asks for nothing beyond the download.

Subsurface holds the better App Store score, 4.5 against 3.0. 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: 63% of Subsurface's written reviews are positive against 0% of Dive Log's.

Subsurface ships an update every 2 months, Dive Log every 2 days. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Subsurface | Dive Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews)** | [3.0 (3 ratings)](https://appshunter.io/ios/app/dive-log-scuba-logbook-sealog/id6791026618/reviews) |
| Number of ratings | **48** | 3 |
| Positive reviews | **63.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 52 MB | 77 MB |
| Requires iOS | 17 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Hohndel](https://appshunter.io/developer/1093217160) | [Roadtrip Technologies Limited](https://appshunter.io/developer/1342256625) |

## 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


### Dive Log

[App page](https://appshunter.io/ios/app/dive-log-scuba-logbook-sealog/id6791026618)

This app automatically logs your scuba dives by importing data directly from your dive computer or other dive log applications. It provides detailed dive information, allows you to add photos and videos, and tracks your marine life sightings and diving statistics. Share dives with buddies and manage your diving history offline.

**Highlights:** Automatic dive computer import, Dive site database, Marine life logging (Seadex), Dive statistics tracking, Photo and video integration, Offline functionality, Buddy dive sharing

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SeaLog Pro Weekly | $7.99 | per 7 days |
| SeaLog Pro Monthly | $11.99 | per month |
| SeaLog Pro Yearly | $39.99 | per year |
| SeaLog Pro | $39.99 | per year |


## Frequently asked questions

### Is Subsurface free?

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

### Is Dive Log free?

Dive Log is free to download, with in-app purchases available.

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

Subsurface is rated higher. Subsurface averages 4.5 out of 5 from 48 ratings, while Dive Log averages 3.0 from 3 ratings.

### Do Subsurface or Dive Log have ads?

Neither Subsurface nor Dive Log shows ads.

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

Subsurface ships an update every 2 months, and Dive Log every 2 days. Most recently, Subsurface was updated on October 22, 2026 and Dive Log on October 27, 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.*