# Oceanic+ Scuba Diving Computer vs Mares App

The clearest difference is ratings volume: Oceanic+ Scuba Diving Computer at 4.7K against Mares App's 189. Oceanic+ Scuba Diving Computer also leads on review sentiment (62% vs 48%) and chart position (#67 vs unranked). Mares App's advantage is iOS requirement (16.6 vs 18.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Oceanic+ Scuba Diving Computer sells 7 in-app purchases, starting at $1.99 per month and Mares App sells 8 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for Oceanic+ Scuba Diving Computer against 4.5 for Mares App. That said, the two scores are not equally well evidenced: Oceanic+ Scuba Diving Computer has 4.7K ratings behind it against 189, so its average is the more settled of the two. Written reviews are what separate them: 62% of Oceanic+ Scuba Diving Computer's written reviews are positive against 48% of Mares App's.

Both ship on a similar rhythm, roughly every 4 weeks. The most recent releases landed on October 22, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Oceanic+ Scuba Diving Computer | Mares App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (4.7K ratings)](https://appshunter.io/ios/app/oceanic-plus-scuba-diving-computer/id1610517133/reviews) | **[4.5 (189 ratings)](https://appshunter.io/ios/app/mares-app/id1625641063/reviews)** |
| Number of ratings | **4.7K** | 189 |
| Positive reviews | **62.3% of reviews** | 48.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | Every 4 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#67** | — |
| Size | 76 MB | 203 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Huish Outdoors, LLC](https://appshunter.io/developer/1591942998) | [Head Watersports S.p.A.](https://appshunter.io/developer/1193522423) |

## What reviewers say

### Oceanic+ Scuba Diving Computer

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

**Currently charting:** #67 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


### Mares App

[App page](https://appshunter.io/ios/app/mares-app/id1625641063)

Transform your Apple Watch Ultra into a dive computer, recording dives directly on your wrist. Log scuba, freediving, and technical dives, manage dive sites, and track underwater wildlife sightings. Share your adventures with dive buddies and keep your equipment details organized.

**Highlights:** Apple Watch Ultra dive computer integration, Digital dive logbook, Dive site database and management, Underwater wildlife tracking, Dive buddy sharing, Dive equipment management, Firmware updates

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snorkel Only | $2.99 | per month |
| Full Featured Month (Housing Only) | $6.99 | per month |
| Full Featured Month (Ultra Only) | $6.99 | per month |
| MARES Fully Featured Monthly | $8.99 | per month |
| Full Featured Yearly (Housing Only) | $49.99 | per year |
| Full Featured Yearly (Ultra Only) | $49.99 | per year |
| MARES Fully Featured Yearly | $69.99 | per year |
| MARES Fully Featured Yearly Family | $119.99 | per year |


## Frequently asked questions

### Is Oceanic+ Scuba Diving Computer free?

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

### Is Mares App free?

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

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

Mares App is rated higher. Oceanic+ Scuba Diving Computer averages 4.4 out of 5 from 4.7K ratings, while Mares App averages 4.5 from 189 ratings.

### Do Oceanic+ Scuba Diving Computer or Mares App have ads?

Neither Oceanic+ Scuba Diving Computer nor Mares App shows ads.

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

Oceanic+ Scuba Diving Computer ships an update every 4 weeks, and Mares App every 4 weeks. Most recently, Oceanic+ Scuba Diving Computer was updated on October 22, 2026 and Mares App on October 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.*