# Submersion Dive Log vs Reef

The clearest difference is in-app purchases: Submersion Dive Log at none against Reef's 2. Submersion Dive Log also leads on ratings volume (12 vs 1). Reef's advantage is rating (5.0 vs 4.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Reef sells 2 in-app purchases, starting at $4.99 per month. Submersion Dive Log asks for nothing beyond the download.

Reef holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Submersion Dive Log has 12 ratings behind it against 1, so its average is the more settled of the two.

Submersion Dive Log ships an update weekly, Reef every 6 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Submersion Dive Log | Reef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (12 ratings)](https://appshunter.io/ios/app/submersion-dive-log/id6757456915/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reef-scuba-diving-logbook/id6761029175/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | **Free** | Freemium |
| Size | 167 MB | 174 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eric Griffin](https://appshunter.io/developer/1867101718) | [Anton Usov](https://appshunter.io/developer/1887388788) |

## What reviewers say

### 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


### Reef

[App page](https://appshunter.io/ios/app/reef-scuba-diving-logbook/id6761029175)

Record your scuba dives with detailed information, photos, and dive site locations. Track your statistics, manage dive gear, and store certifications. This app works offline and keeps your dive history private.

**Highlights:** Log dive details (depth, duration, temp, etc.), Attach photos to dive entries, Track dive statistics, Map dive sites globally, Manage dive gear and service intervals, Store dive certifications

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reef Pro - Monthly | $4.99 | per month |
| Reef Pro - Yearly | $29.99 | per year |


## Frequently asked questions

### Is Submersion Dive Log free?

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

### Is Reef free?

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

### Which has better reviews, Submersion Dive Log or Reef?

Reef is rated higher. Submersion Dive Log averages 4.6 out of 5 from 12 ratings, while Reef averages 5.0 from 1 ratings.

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

Neither Submersion Dive Log nor Reef shows ads.

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

Submersion Dive Log ships an update weekly, and Reef every 6 days. Most recently, Submersion Dive Log was updated on October 28, 2026 and Reef on October 28, 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.*