# Diviac vs Subsurface

The clearest difference is review sentiment: Subsurface at 63% against Diviac's 19%. Subsurface also leads on rating (4.5 vs 1.8). Diviac's advantage is iOS requirement (6.0 vs 17). On price, ratings volume, update cadence 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.

Subsurface holds the better App Store score, 4.5 against 1.8. Both are backed by a comparable volume of ratings — 18 and 48 respectively. Written reviews point the same way: 19% of Diviac's written reviews are positive against 63% of Subsurface's.

Diviac ships an update every 5 weeks, Subsurface every 2 months. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Diviac | Subsurface |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (18 ratings)](https://appshunter.io/ios/app/diviac-scuba-diving-logbook/id930068909/reviews) | **[4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews)** |
| Number of ratings | 18 | **48** |
| Positive reviews | 19.4% of reviews | **63.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 26 MB | 52 MB |
| Requires iOS | **6.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PADI Travel AG](https://appshunter.io/developer/929595293) | [Dirk Hohndel](https://appshunter.io/developer/1093217160) |

## What reviewers say

### Diviac

[App page](https://appshunter.io/ios/app/diviac-scuba-diving-logbook/id930068909)

Log your scuba dives with this cloud-based digital logbook. It features a marine life database, social sharing, and direct dive computer uploads. Store your dive memories, connect with other divers, and plan your next underwater adventure.

**Highlights:** Cloud-based dive logging, Direct dive computer upload, Marine life database, Social sharing and community, Dive site research and booking, Dive buddy validation

**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 Diviac free?

Diviac 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, Diviac or Subsurface?

Subsurface is rated higher. Diviac averages 1.8 out of 5 from 18 ratings, while Subsurface averages 4.5 from 48 ratings.

### Do Diviac or Subsurface have ads?

Neither Diviac nor Subsurface shows ads.

### Which is updated more often, Diviac or Subsurface?

Diviac ships an update every 5 weeks, and Subsurface every 2 months. Most recently, Diviac 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.*