Comparison

Oceanic+ Scuba Diving Computer vs Watch Chartplotter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Oceanic+ Scuba Diving Computer

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
Currently charting
Read full description

Dive into a World of Adventure with Oceanic+ on Your Apple Watch Ultra! Ready to make every dive or snorkeling experience an unforgettable journey? Oceanic+ transforms your Apple Watch Ultra into a full-featured dive computer, making it easier to explore the underwater world - from your favorite local spots to the most exotic oceans. NEW FEATURES Explore Like a Local with User-Generated Heatmaps Curious about the best dive spots? Our new heatmaps reveal popular scuba, freediving, and snorkeling locations worldwide or near your hotel. Switch between modes to see where fellow divers have explored and check water conditions reported up to 3 days in advance. Track Your Snorkeling Adventures Each snorkeling session is now mapped out for you! Get a detailed route using GPS data and relive the experience directly on your Apple Watch or iPhone. Your Dive Memories, Perfectly Organized Sorting through your dive photos and videos has never been easier. Our updated interface allows you to quickly organize, color-correct, and relive your underwater moments. Share the Joy, Keep Your Privacy Show off your latest dive location, compete on stats, or share logbooks and photos - only with the people you choose. You control who sees what, ensuring your privacy is always protected. Add your dive buddies, share your underwater adventures, and track your gear from popular brands—or create your own custom descriptions. THE COMPLETE DIVING COMPANION Whether you're planning your next dive, capturing underwater memories, or analyzing your dive stats, Oceanic+ is designed to make the most of your diving experience. • Dive Housing: Scuba and Gauge mode • Apple Watch Ultra: Scuba and Freediving modes • Apple Watch Series 10: Snorkeling mode • Oceanic O.i Wrist Compatibility: sync pre-dive settings and post-dive logbooks between Oceanic+ and the new Oceanic O.i Wrist dive computer • Pre-Dive Planner with real-time conditions, tides, and community insights • No Deco Planner for calculated dives • Real-Time Dive Data with depth, time, and ascent rate monitoring • Activity Map to see all your dives on a world map • Dive Alerts like visual and haptic warnings • 7 Custom Watch Faces to match your style STAY INFORMED UNDERWATER Oceanic+ uses the trusted Bühlmann algorithm to keep you informed during every dive. Plan Like a Pro Set your gas mix, max depth, dive time, and more with our powerful no-deco planner. Track Your Tissues Oceanic+ uses the trusted Bühlmann algorithm to allow you the flexibility of customization and efficiency for your decompression profiles. Get the Big Picture Log dives, photos, videos, and stats with GPS-enhanced details for every location. Explore Freediving With custom alarms, heart rate tracking, and more, our Freediving Mode helps you track every session. Make the Most of Your Dives With features like weight planning and easy dive log and media export, you'll always have the ultimate dive tool with you. PLANS Start with free basic features, or unlock advanced tools and features with plans starting at just $1.99/month, or choose the $129.99 Annual Family plan. Each plan is tailored to fit your needs. With Oceanic+, every dive is a story

About

Watch Chartplotter

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
Read full description

The Performance Marine GPS for Racing & Sailing Transform your Apple Watch into a powerful, tactical racing computer. Watch Chartplotter is designed for competitive sailors, windsurfers, and kite racers who demand real-time performance data right on their wrist. Leave the bulky electronics behind and get the critical metrics you need to sail faster and smarter. Optimize Your Performance with VMG Make better tactical decisions with live Velocity Made Good (VMG). See exactly how fast you are closing in on your next waypoint and adjust your heading to maximize your efficiency toward the mark. Essential Racing Metrics on Your Wrist Stay informed without losing focus. Get instant, glanceable access to your most vital data: Real-Time Speed: Track your current boatspeed in knots, mph, or km/h. Average & Max Speed: Monitor your session's performance and push for a new personal best. Precise Heading: See your current course and the bearing to your next waypoint. Distance to the mark: Know exactly how far you have to go. Compass bearing to the mark: Know which direction on a compass the next waypoint is. Seamless Waypoint Navigation Plan your course on your iPhone and sync it directly to your watch. The app automatically transitions to the next waypoint as you round a mark, with haptic feedback to keep you alerted without needing to look at the screen. Disable and optionally hide waypoints. Disabled waypoints will be skipped when automatically going to the next waypoint. Offline Marine Charts Navigate with confidence using NOAA MACHC (U.S, Parts of South and Central America, Caribbean, Netherlands and some Pacific Islands), Australian Hydrographic Office (Australia) and OpenSeaMap (Worldwide) charts. Download offline. Power users can also add custom WMS and XYZ map servers for specialized layers. Built for the Elements Water Lock: Prevents accidental screen touches from spray and waves. HealthKit Integration: Logs your racing sessions as workouts, tracking your route, heart rate, and calories burned. Pay Once, Race Forever. Enjoy all professional features with a single purchase. No subscriptions, no hidden fees. Perfect for dinghy racing, catamaran sailing, kite foiling, and any on-water activity where performance matters. Get the winning edge with Watch Chartplotter. Note: This app is not certified for navigation. It is not an official navigational chart and must not be used for navigation or any related operational decision-making. It is designed to support shore-based maritime awareness and analysis. Map and chart data copyright: NOAA, MACHC, Australian Hydrographic Office, OpenStreetMap, Thunderforest and Mapbox.

Screenshots

Oceanic+ Scuba Diving Computer4 screens
Watch Chartplotter4 screens

Verdict

The call

The clearest difference is price: Oceanic+ Scuba Diving Computer at Free against Watch Chartplotter's $9.99. Oceanic+ Scuba Diving Computer also leads on ratings volume (4.7K vs 1) and chart position (#74 vs unranked). Watch Chartplotter's advantage is rating (5.0 vs 4.4) and review sentiment (100% vs 62%). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Watch Chartplotter holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Oceanic+ Scuba Diving Computer 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 Oceanic+ Scuba Diving Computer's written reviews are positive against 100% of Watch Chartplotter's.

UpkeepUpdate frequency

Oceanic+ Scuba Diving Computer ships an update every 4 weeks, Watch Chartplotter weekly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard9 real differences · 2 level
Oceanic+ Scuba Diving Computer versus Watch Chartplotter: the parameters behind the verdict, then further details
ParameterOceanic+ Scuba Diving ComputerWatch Chartplotter
PriceFree — better$9.99
Rating4.4 (4.7K ratings)5.0 (1 ratings) — better
Positive reviews62.4% of reviews100.0% of reviews — better
Number of ratings4.7K — better1
Update frequencyEvery 4 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#74 — better—
DevicesiPhone, Apple WatchiPhone, Apple Watch
Requires iOS18.0 — better26.0
Further details — not scored
Size76 MB10 MB
Age rating4+4+
DeveloperHuish Outdoors, LLCEvan Hallein

Customer experience

Oceanic+ Scuba Diving Computer

All ratings4,722 ratings
Positive83.9%
Neutral3.9%
Negative12.2%
Written reviews2,017 reviews
Positive62.4%
Neutral8.9%
Negative28.8%

Watch Chartplotter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Oceanic+ Scuba Diving Computer

Reported bugs

4 issues
  • 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

5 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Oceanic+ Scuba Diving Computer

Subscriptions5
  • Snorkeling+$1.991 Month
  • Freediving Monthly$4.991 Month
  • Monthly$9.991 Month
Show 2 more
  • Annual1 Year trial$79.991 Year
  • Annual Family1 Year trial$129.991 Year
One-time2
  • One day$0.99
  • One Day$4.99
None

Watch Chartplotter

No in-app purchases

Questions

Is Oceanic+ Scuba Diving Computer free?
Oceanic+ Scuba Diving Computer 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, Oceanic+ Scuba Diving Computer or Watch Chartplotter?
Watch Chartplotter is rated higher. Oceanic+ Scuba Diving Computer averages 4.4 out of 5 from 4.7K ratings, while Watch Chartplotter averages 5.0 from 1 ratings.
Do Oceanic+ Scuba Diving Computer or Watch Chartplotter have ads?
Neither Oceanic+ Scuba Diving Computer nor Watch Chartplotter shows ads.
Which is updated more often, Oceanic+ Scuba Diving Computer or Watch Chartplotter?
Oceanic+ Scuba Diving Computer ships an update every 4 weeks, and Watch Chartplotter weekly. Most recently, Oceanic+ Scuba Diving Computer was updated on November 1, 2026 and Watch Chartplotter on October 30, 2026.

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