Comparison

Scuba Diving Computer Oceanic+ vs Mares App

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

Head to head
About

Scuba Diving Computer Oceanic+

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, Freediving, and Snorkeling modes - 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. - Safety Tools like visual and haptic warnings. 7 Custom Watch Faces to match your style. - Stay Safe Underwater Oceanic+ uses the trusted Bühlmann algorithm to keep you informed and safe 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. - Go Deeper into Freediving With custom alarms, heart rate tracking, and more, our Freediving Mode helps you set new boundaries. - 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. - 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 waiting to be told. Start your next adventure today. Visit https://www.oceanicworldwide.com/oceanic-plus/ for more.

About

Mares App

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
Read full description

APPLE WATCH ULTRA DIVE COMPUTER Transform your Ultra into a dive computer. Record dives directly on your wrist and sync automatically to the Mares App. (In-app purchase required.) DIGITAL LOGBOOK: Log your Scuba, Freediving, Extended Range and Rebreather (SCR/CCR) dives in seconds via Bluetooth. Easily share your dives via QR code. Add new dives with your device’s GPS and download your dives from selected dive computers (1*). DIVE SITES: With the help of the Mares dive site database, you can immediately assign a dive site to your logged dives. You can also add your own private dive sites and share them with your dive buddies using a QR code. You can download your dive data directly from selected Mares dive computers . WILDLIFE: A variety of local wildlife is already stored in the app for individual dive sites. This means you can immediately assign the highlights of your underwater encounters to your logged dives. Your sightings are displayed on your personal world map. DIVE BUDDIES: Easily add your dive buddies via QR code or manually in the app. Share your best dives and most exciting animal encounters with friends using the Mares app. STATISTICS: All your dives and data can be seen at a glance, including your longest or deepest dive, your average dive time and more! DIGITAL EQUIPMENT: Store important dive equipment details, including serial numbers, photos and invoices. Enter maintenance dates and keep track of when your equipment needs to be serviced. NEWS AND VIDEOS: Stay up-to-date with all the latest news and videos from the world of water sports and diving. FIRMWARE: When you connect your dive computer to the app, you will be able to confirm if you have the latest firmware. As soon as it is outdated, you will receive a message regarding the newest firmware to download. TABLES: Here you will find useful information such as decompression tables and emergency scenarios. 1* Currently available for MARES Sirius, Sirius L, Sirius Hunter, Horizon, Genius, Quad CI, Quad 2, Quad Air, Quad, Puck 4, Puck Pro EZ, Puck lite, Puck Pro, Puck Pro Plus, Puck Air 2, Smart, Smart Apnea, Smart Air Terms of Use (EULA) Mares App for Apple Watch Ultra: https://my.divessi.com/published/viewhls/awu_terms_v1/2

Screenshots

Scuba Diving Computer Oceanic+4 screens
Mares App4 screens

Verdict

The call

Scuba Diving Computer Oceanic+ and Mares App both sit at 4.4 stars, but that hides the real split: 69% of Scuba Diving Computer Oceanic+'s written reviews are positive against 47% of Mares App's. Scuba Diving Computer Oceanic+ also leads on ratings volume (4.6K vs 183) and chart position (#72 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.

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

Both are free to download. Scuba Diving Computer Oceanic+ 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Scuba Diving Computer Oceanic+ against 4.5 for Mares App. That said, the two scores are not equally well evidenced: Scuba Diving Computer Oceanic+ has 4.6K ratings behind it against 183, so its average is the more settled of the two. Written reviews are what separate them: 69% of Scuba Diving Computer Oceanic+'s written reviews are positive against 47% of Mares App's.

UpkeepUpdate frequency

Scuba Diving Computer Oceanic+ ships an update every 4 weeks, Mares App every 3 weeks. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 7 level
Scuba Diving Computer Oceanic+ versus Mares App: the parameters behind the verdict, then further details
ParameterScuba Diving Computer Oceanic+Mares App
PriceFreeFree
Rating4.4 (4.6K ratings)4.5 (183 ratings) — better
Positive reviews68.9% of reviews — better47.5% of reviews
Number of ratings4.6K — better183
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#72 — better—
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch — better
Requires iOS18.016.6 — better
Further details — not scored
Size102 MB247 MB
Age rating4+4+
DeveloperHuish Outdoors, LLCHead Watersports S.p.A.

Customer experience

Scuba Diving Computer Oceanic+

All ratings4,625 ratings
Positive83.8%
Neutral4.0%
Negative12.2%
Written reviews1,143 reviews
Positive68.9%
Neutral7.6%
Negative23.5%

Mares App

All ratings183 ratings
Positive89.6%
Neutral4.9%
Negative5.5%
Written reviews99 reviews
Positive47.5%
Neutral12.1%
Negative40.4%

Bugs and requests

Scuba Diving Computer Oceanic+

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

Mares App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Scuba Diving Computer Oceanic+

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
8 purchases

Mares App

Subscriptions8
  • Snorkel Only$2.991 Month
  • Full Featured Month (Housing Only)3 Days trial$6.991 Month
  • Full Featured Month (Ultra Only)3 Days trial$6.991 Month
Show 5 more
  • MARES Fully Featured Monthly3 Days trial$8.991 Month
  • Full Featured Yearly (Housing Only)3 Days trial$49.991 Year
  • Full Featured Yearly (Ultra Only)3 Days trial$49.991 Year
  • MARES Fully Featured Yearly3 Days trial$69.991 Year
  • MARES Fully Featured Yearly Family3 Days trial$119.991 Year

Questions

Is Scuba Diving Computer Oceanic+ free?
Scuba Diving Computer Oceanic+ 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, Scuba Diving Computer Oceanic+ or Mares App?
Mares App is rated higher. Scuba Diving Computer Oceanic+ averages 4.4 out of 5 from 4.6K ratings, while Mares App averages 4.5 from 183 ratings.
Do Scuba Diving Computer Oceanic+ or Mares App have ads?
Neither Scuba Diving Computer Oceanic+ nor Mares App shows ads.
Which is updated more often, Scuba Diving Computer Oceanic+ or Mares App?
Scuba Diving Computer Oceanic+ ships an update every 4 weeks, and Mares App every 3 weeks. Most recently, Scuba Diving Computer Oceanic+ was updated on September 24, 2026 and Mares App on September 21, 2026.

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