# Subsurface vs Scuba Diving Computer Oceanic+

The clearest difference is in-app purchases: Subsurface at none against Scuba Diving Computer Oceanic+'s 7. Scuba Diving Computer Oceanic+'s advantage is ratings volume (4.7K vs 48) and update cadence (every 3 weeks vs every 2 months). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Scuba Diving Computer Oceanic+ sells 7 in-app purchases, starting at $1.99 per month. Subsurface asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Subsurface against 4.4 for Scuba Diving Computer Oceanic+. That said, the two scores are not equally well evidenced: Scuba Diving Computer Oceanic+ has 4.7K ratings behind it against 48, so its average is the more settled of the two. Written reviews are what separate them: 63% of Subsurface's written reviews are positive against 62% of Scuba Diving Computer Oceanic+'s.

Subsurface ships an update every 2 months, Scuba Diving Computer Oceanic+ every 3 weeks. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Subsurface | Scuba Diving Computer Oceanic+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews)** | [4.4 (4.7K ratings)](https://appshunter.io/ios/app/scuba-diving-computer-oceanic-plus/id1610517133/reviews) |
| Number of ratings | 48 | **4.7K** |
| Positive reviews | **63.3% of reviews** | 62.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#63** |
| Size | 52 MB | 102 MB |
| Requires iOS | **17** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Hohndel](https://appshunter.io/developer/1093217160) | [Huish Outdoors, LLC](https://appshunter.io/developer/1591942998) |

## 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


### Scuba Diving Computer Oceanic+

[App page](https://appshunter.io/ios/app/scuba-diving-computer-oceanic-plus/id1610517133)

**Currently charting:** #63 Top Grossing · Sports (US App Store)

Transform your Apple Watch Ultra into a comprehensive dive computer for scuba, freediving, and snorkeling. Explore new locations with heatmaps, track your routes, organize underwater media, and share your adventures securely. Plan dives, monitor real-time data, and stay safe with advanced algorithms.

**Highlights:** Dive computer functionality, Snorkeling route tracking, User-generated dive spot heatmaps, Dive log and media organization, Pre-dive planner, Real-time dive data monitoring, Freediving mode with custom alarms

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snorkeling+ | $1.99 | per month |
| Freediving Monthly | $4.99 | per month |
| Monthly | $9.99 | per month |
| Annual | $79.99 | per year |
| Annual Family | $129.99 | per year |
| One day | $0.99 | one-time |
| One Day | $4.99 | one-time |

**What reviewers like**

- 🚀 Bright, clear display
- 👍 Intuitive and easy to use
- 🚀 Detailed dive logs and analytics
- 👍 Helpful safety alerts and vibration feedback
- 🚀 Seamless integration with Apple Watch

**What reviewers complain about**

- 🔒 Subscription-based model
- 🐛 Syncing issues between watch and phone
- 🐛 Unreliable dive mode activation
- 🐛 Premature dive end when surfacing briefly
- 🔒 Lack of air integration

**Reported bugs**

- App crashes or freezes during dives
- Dive data not syncing correctly between devices
- Incorrect depth/time recording in some cases
- Unexpected switches between dive and snorkel modes

**Requested features**

- Ability to manually add/edit past dives
- Option to customize data screens and information displayed
- Automatic dive mode activation upon submerging
- Air integration with tank pressure monitoring
- Offline functionality and dive log backup


## Frequently asked questions

### Is Subsurface free?

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

### Is Scuba Diving Computer Oceanic+ free?

Scuba Diving Computer Oceanic+ is free to download, with in-app purchases available.

### Which has better reviews, Subsurface or Scuba Diving Computer Oceanic+?

Subsurface is rated higher. Subsurface averages 4.5 out of 5 from 48 ratings, while Scuba Diving Computer Oceanic+ averages 4.4 from 4.7K ratings.

### Do Subsurface or Scuba Diving Computer Oceanic+ have ads?

Neither Subsurface nor Scuba Diving Computer Oceanic+ shows ads.

### Which is updated more often, Subsurface or Scuba Diving Computer Oceanic+?

Subsurface ships an update every 2 months, and Scuba Diving Computer Oceanic+ every 3 weeks. Most recently, Subsurface was updated on October 6, 2026 and Scuba Diving Computer Oceanic+ on October 14, 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.*