Comparison

Shearwater Cloud 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

Shearwater Cloud

Connect your mobile device to your dive computer to download, manage, and analyze dive logs. Update firmware and utilize cloud storage for accessible and secure dive data across multiple devices.

Highlights
  • Download dive logs via Bluetooth LE
  • Analyze depth, decompression, and temperature
  • Cloud storage for dive logs
  • Firmware updates for dive computers
  • Cross-device accessibility
Features
Read full description

Shearwater Cloud links your mobile device to your Shearwater dive computer. It allows you to download and manage your dive logs, update your dive computer firmware, and use cloud storage. Using Bluetooth LE technology, you can quickly and easily download your dive logs to Shearwater Cloud. Once your logs are downloaded, you can analyze your depth, decompression profile, temperature, and much more. The defining feature of Shearwater Cloud is the ability to store your dives via the cloud. Cloud storage provides accessibility to your dives on any mobile device with an internet connection. In addition, dive logs can be recovered should the dive logs be lost on a local storage. Shearwater Cloud is compatible with Tern, Peregrine, Teric, Perdix 2, Perdix AI, Perdix, NERD 2, Petrel 3, and Petrel 2.

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

Shearwater Cloud1 screens
Mares App4 screens

Verdict

The call

The clearest difference is rating: Mares App at 4.5 against Shearwater Cloud's 2.6. Mares App also leads on review sentiment (48% vs 26%). Shearwater Cloud's advantage is in-app purchases (none vs 8) and iOS requirement (13.0 vs 16.6). On price, ratings volume, 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. Mares App sells 8 in-app purchases, starting at $2.99 per month. Shearwater Cloud asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Mares App holds the better App Store score, 4.5 against 2.6. Both are backed by a comparable volume of ratings — 104 and 189 respectively. Written reviews point the same way: 26% of Shearwater Cloud's written reviews are positive against 48% of Mares App's.

UpkeepUpdate frequency

Shearwater Cloud ships an update every 5 weeks, Mares App every 4 weeks. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.

Scorecard5 real differences · 5 level
Shearwater Cloud versus Mares App: the parameters behind the verdict, then further details
ParameterShearwater CloudMares App
PriceFreeFree
Rating2.6 (104 ratings)4.5 (189 ratings) — better
Positive reviews25.8% of reviews48.1% of reviews — better
Number of ratings104189 — better
Update frequencyEvery 5 weeksEvery 4 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.0 — better16.6
Further details — not scored
Size333 MB203 MB
Age rating4+4+
DeveloperShearwater ResearchHead Watersports S.p.A.

Customer experience

Shearwater Cloud

All ratings104 ratings
Positive29.8%
Neutral19.2%
Negative51.0%
Written reviews151 reviews
Positive25.8%
Neutral21.9%
Negative52.3%

Mares App

All ratings189 ratings
Positive89.4%
Neutral4.8%
Negative5.8%
Written reviews108 reviews
Positive48.1%
Neutral12.0%
Negative39.8%

Bugs and requests

Shearwater Cloud

Reported bugs

18 issues
  • App crashes on startup with latest iOS versions
  • Bluetooth connection causes app to freeze or crash
  • Dives fail to download or sync completely
  • Dive numbers display incorrectly compared to computer
  • Data loss when updating app or firmware
Show 13 more
  • Graph freezes when viewing in landscape mode
  • Cloud account requirement blocks app access
  • Slow download speeds (8+ minutes per dive)
  • Dropdown menus and UI elements unresponsive
  • Surface interval and end dive time removed in updates
  • Temperature unit conversion failures
  • SAC rate calculation errors
  • Auto-download toggle cannot be disabled
  • Checkboxes for filtering data removed
  • iPad version displays iPhone layout only
  • German/Italian translation mix-up
  • Unable to connect to specific computer models
  • Scrolling triggers accidental field selection

Requested features

20 requests
  • Modern, native-looking user interface redesign
  • GPS/geolocation integration for dive sites
  • Ability to manually add or import dives
  • Photo attachment capability for dives
  • Dive planner functionality
Show 15 more
  • Map view of dive locations
  • Landscape mode optimization for iPad
  • Ability to copy/paste information between dives
  • Filter dives by mode (recreational, technical, etc.)
  • Average SAC rate statistics across all dives
  • Buddy management and sharing features
  • Equipment tracking and reuse
  • Dive profile zoom capability
  • PDF export of dive logs
  • Support for more tank configurations
  • GFSurf information on graphs
  • Smart notifications/SNS integration
  • Dive date format customization
  • Full-screen graph in landscape orientation
  • Selective dive download options

Mares App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Shearwater Cloud

No in-app purchases

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 Shearwater Cloud free?
Shearwater Cloud is free to download, with no in-app purchases.
Is Mares App free?
Mares App is free to download, with in-app purchases available.
Which has better reviews, Shearwater Cloud or Mares App?
Mares App is rated higher. Shearwater Cloud averages 2.6 out of 5 from 104 ratings, while Mares App averages 4.5 from 189 ratings.
Do Shearwater Cloud or Mares App have ads?
Neither Shearwater Cloud nor Mares App shows ads.
Which is updated more often, Shearwater Cloud or Mares App?
Shearwater Cloud ships an update every 5 weeks, and Mares App every 4 weeks. Most recently, Shearwater Cloud was updated on October 21, 2026 and Mares App on October 18, 2026.

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