# Scuba Diving Computer Oceanic+ vs Watch Chartplotter

The clearest difference is price: Scuba Diving Computer Oceanic+ at Free against Watch Chartplotter's $9.99. Scuba Diving Computer Oceanic+ also leads on ratings volume (4.7K vs 1) and iOS requirement (18.0 vs 26.0). Watch Chartplotter's advantage is rating (5.0 vs 4.4) and review sentiment (100% vs 62%). On ads, chart position and device support there is nothing between them.

Scuba Diving Computer Oceanic+ is free to download; Watch Chartplotter costs $9.99 up front. Scuba Diving Computer Oceanic+ sells 7 in-app purchases, starting at $1.99 per month. Watch Chartplotter asks for nothing beyond the download.

Watch Chartplotter holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Scuba Diving Computer Oceanic+ has 4.7K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 62% of Scuba Diving Computer Oceanic+'s written reviews are positive against 100% of Watch Chartplotter's.

Scuba Diving Computer Oceanic+ ships an update every 3 weeks, Watch Chartplotter every 5 days. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Scuba Diving Computer Oceanic+ | Watch Chartplotter |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [4.4 (4.7K ratings)](https://appshunter.io/ios/app/scuba-diving-computer-oceanic-plus/id1610517133/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/watch-chartplotter/id6459739045/reviews)** |
| Number of ratings | **4.7K** | 1 |
| Positive reviews | 62.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | #76 | **#70** |
| Size | 102 MB | 10 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Huish Outdoors, LLC](https://appshunter.io/developer/1591942998) | [Evan Hallein](https://appshunter.io/developer/336761283) |

## What reviewers say

### Scuba Diving Computer Oceanic+

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

**Currently charting:** #76 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


### Watch Chartplotter

[App page](https://appshunter.io/ios/app/watch-chartplotter/id6459739045)

**Currently charting:** #70 Top Paid · Sports (US App Store)

This performance marine GPS transforms your Apple Watch into a tactical racing computer. It provides real-time speed, VMG, distance to mark, and offline marine charts for competitive sailors and windsurfers. Plan courses on your iPhone and sync them directly to your watch for seamless navigation.

**Highlights:** Real-time VMG and speed metrics, Waypoint navigation with haptic feedback, Offline marine charts (NOAA, AHO, OpenSeaMap), Water Lock mode, HealthKit integration for workout logging, Custom WMS and XYZ map server support

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

**In-app purchases:** none


## Frequently asked questions

### Is Scuba Diving Computer Oceanic+ free?

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

### Is Watch Chartplotter free?

Watch Chartplotter costs $9.99, with no in-app purchases.

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

Watch Chartplotter is rated higher. Scuba Diving Computer Oceanic+ averages 4.4 out of 5 from 4.7K ratings, while Watch Chartplotter averages 5.0 from 1 ratings.

### Do Scuba Diving Computer Oceanic+ or Watch Chartplotter have ads?

Neither Scuba Diving Computer Oceanic+ nor Watch Chartplotter shows ads.

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

Scuba Diving Computer Oceanic+ ships an update every 3 weeks, and Watch Chartplotter every 5 days. Most recently, Scuba Diving Computer Oceanic+ was updated on October 13, 2026 and Watch Chartplotter on September 29, 2026.

### Which is more popular, Scuba Diving Computer Oceanic+ or Watch Chartplotter?

Scuba Diving Computer Oceanic+ currently peaks at #76 in the App Store charts, and Watch Chartplotter at #70. Chart position reflects recent download velocity rather than total install base.

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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.*