Shearwater Cloud vs Abysner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Download dive logs via Bluetooth LE
- Analyze depth, decompression, and temperature
- Cloud storage for dive logs
- Firmware updates for dive computers
- Cross-device accessibility
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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.
Abysner
This app is an open-source dive planning tool designed for simplicity and ease of use. It supports various gas mixes and decompression models, allowing for accurate planning of technical and recreational dives. Its intuitive interface makes it suitable for use even in challenging conditions.
- Buhlmann ZHL-16 A, B, C models
- Multi-gas support (Air, Nitrox, Trimix, etc.)
- OTU and CNS tracking
- Customizable environmental settings
- Intuitive gas picker
- Automatic contingency plans
- Multi-level dive planning
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Abysner is an open-source, modern dive planning tool with a focus on simplicity and usability. Built to give something back to the diving community, its primary aim is not to be the most feature-rich, but to be quick, user-friendly, and straightforward. Whether you're planning a deep technical dive or just want to check your MOD, Abysner makes dive planning smooth, accurate, and fast—perfect for use even right beside the water. Supported Features: • Models: Supports Buhlmann ZHL-16 A, B, and C with gradient factors. • Multi-Gas Support: Plan dives with Air, Nitrox, Oxygen, Trimix, Helitrox, Heliox, and more. • Oxygen: Includes OTU and CNS tracking for safe dive planning. • Customizable Settings: • Set salinity and altitude according to the diving environment. • Adjust SAC rates, ascent/descent rates. • Fine-tune decompression stop intervals and last deco stop depth. • Control max PPO2 for both during deco stops and normal diving. • Gas Picker: An intuitive interface for selecting and managing gas mixes, with critical information at your fingertips. • Automatic Contingency Plans: Automatically adjusts for longer or deeper dives, with configurable extra time and depth. • Gas Planning: • Visual chart of gas requirements per mix. • Density and PPO2 info at maximum depths for each gas. • Multi-Level Dive Planning: Plan dives across different depths with ease. Please note: CCR planning is not available yet. More coming soon!
Screenshots
Verdict
The clearest difference is review sentiment: Abysner at 100% against Shearwater Cloud's 26%. Abysner also leads on rating (5.0 vs 2.6). Shearwater Cloud's advantage is price (Free vs $2.99) and ratings volume (104 vs 2). On update cadence, ads, in-app purchases 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
Shearwater Cloud is free to download; Abysner costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Abysner holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Shearwater Cloud has 104 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 26% of Shearwater Cloud's written reviews are positive against 100% of Abysner's.
Shearwater Cloud ships an update every 5 weeks, Abysner every 2 months. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.
| Parameter | Shearwater Cloud | Abysner |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 2.6 (104 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 25.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 104 — better | 2 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.3 |
| Further details — not scored | ||
| Size | 333 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Shearwater Research | Roelof Rene Smit |
Customer experience
Shearwater Cloud
Abysner
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
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- 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 moreShow fewer
- 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
Abysner
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Shearwater Cloud
No in-app purchases
Abysner
No in-app purchases
Questions
Is Shearwater Cloud free?
Is Abysner free?
Which has better reviews, Shearwater Cloud or Abysner?
Do Shearwater Cloud or Abysner have ads?
Which is updated more often, Shearwater Cloud or Abysner?
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