Best apps like ATMOS - Diving logbooks

10+ similar apps compared and reviewed

3.9 avg rating
10 free apps
Updated September 2026

ATMOS is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to ATMOS

DIVEROUT - Dive Computer#1

DIVEROUT - Dive Computer by DIVEROUT Tech Co., Ltd.

Apple Watch & Scuba Logbook
Editor's Choice
⚽ Sports
3.6(18 ratings)
FreeIn-App Purchases
DIVEROUT - Dive Computer screenshot 1
DIVEROUT - Dive Computer screenshot 2
DIVEROUT - Dive Computer screenshot 3
DIVEROUT - Dive Computer screenshot 4
DIVEROUT - Dive Computer screenshot 5
DIVEROUT - Dive Computer screenshot 6

This app transforms your Apple Watch into a comprehensive dive computer for scuba, freediving, and snorkeling. It offers AI-powered color correction for underwater photos and videos, advanced freediving training tools, and a community for connecting with other divers.

Nitrox Buddy#2

Nitrox Buddy by Gereon Steffens

Nitrox/Enriched Air Calculator
Strong Contender
⚽ Sports
4.9😊(468 ratings)
FreeIn-App Purchases
Nitrox Buddy screenshot 1
Nitrox Buddy screenshot 2
Nitrox Buddy screenshot 3
Nitrox Buddy screenshot 4
Nitrox Buddy screenshot 5

This application serves as a straightforward calculator for nitrox and enriched air divers. It quickly computes essential dive data such as Maximum Operating Depth (MOD), Equivalent Air Depth (EAD), Best Mix, and Partial Pressure of Oxygen (PPO2). It supports both imperial and metric units and offers a companion watch app for on-the-go calculations.

What We Love

  • πŸ‘ Easy to use
  • πŸš€ Quick calculations
  • βœ… Accurate results
  • πŸ’‘ Free to use
  • 🎯 Essential for Nitrox divers
  • πŸ“± Simple interface
  • πŸ”„ Reliable and functional
  • ✨ Helpful for dive planning
  • πŸ’― Covers all necessary Nitrox calculations
  • πŸ‘ Highly recommended
  • πŸ”§ Pragmatic tool
  • πŸ€“ Great for staying sharp
  • πŸ‘ Perfect for all Nitrox calculations
  • πŸ‘ Double-checks fills
  • πŸ‘ Companion for Nitrox divers
  • πŸ‘ Fast and easy
  • πŸ‘ Great functions
  • πŸ‘ Quick calculator
  • πŸ‘ Easy to double-check safety
  • πŸ‘ Professional Divemaster use
  • πŸ‘ User-friendly
  • πŸ‘ Good visual and tinkering fun
  • πŸ‘ Simplifies math for planning and labels
  • πŸ‘ Works exactly as it should
  • πŸ‘ Clear user interface
  • πŸ‘ Handy for determining depth levels
  • πŸ‘ Straightforward
  • πŸ‘ User friendly
  • πŸ‘ Simple and clear
  • πŸ‘ Makes planning easy
  • πŸ‘ KISS principle at its best
  • πŸ‘ No ads
  • πŸ‘ No weird UI
  • πŸ‘ Best compared to others
  • πŸ‘ Very pleased
  • πŸ‘ Simple and clear
  • πŸ‘ Super practical
  • πŸ‘ Excellent light app

Room to Improve

  • πŸ“± Ugly iPad icon
  • ⚠️ MOD calculation limited to 40% O2 in older versions
  • ⚠️ MOD calculation limited to 50% O2 in older versions
  • ⚠️ Needs to work with older iOS versions
Shearwater Cloud#3

Shearwater Cloud by Shearwater Research

Worth Considering
⚽ Sports
2.6😞(104 ratings)
Free
Shearwater Cloud screenshot 1

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.

What We Love

  • πŸ”„ Reliable dive data synchronization with computers
  • ☁️ Cloud storage functionality for accessing dives across devices
  • πŸ“Š Clear display of dive statistics and information
  • πŸ”Œ Easy Bluetooth connectivity (when working)
  • ⚑ Functional core logging features
  • 🌍 Multi-language support added (Chinese, Russian, etc.)
  • πŸ“± Works on both iPhone and iPad platforms

Room to Improve

  • 🎨 Outdated, unattractive user interface design
  • πŸ“± Poor iPad optimization and landscape mode issues
  • 🐒 Extremely slow performance and lag
  • πŸ”— Frequent Bluetooth connectivity failures
  • πŸ’₯ App crashes on launch and during use
  • πŸ“‰ Cluttered, difficult-to-read graphs
  • 🚫 Cannot manually add or edit dives
  • ❌ Missing essential features compared to competitors
  • πŸ” Forced cloud account requirement without clear explanation
  • πŸ“Š Limited customization and configuration options
  • πŸ› Data loss and synchronization issues
  • ⚠️ Inconsistent dive numbering between app and computer
  • 🎯 Non-intuitive navigation and interaction patterns
  • πŸ“ Excessive typing required for dive logging
  • πŸ”€ Poor translation quality in multiple languages

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4
FreeDive Ai - Apnea Trainer
FreeDive Ai - Apnea Trainer
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Train for freediving mastery!
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This app helps freedivers manage their training and dive information. It offers various training modules, including CO2 and O2 adaptation, static apnea, and dive simulations. Users can track their progress, find dive buddies, and access educational content.

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This app integrates essential scuba diving equipment like a dive computer, camera, compass, and logbook into one mobile device. It leverages mobile technology to enhance the smart diving experience for underwater exploration.

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Subsurface-mobile
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Your dive list on the go
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This application allows divers to manage their dive logs on their mobile devices. It supports editing dive data and downloading new information from compatible dive computers. Optional cloud synchronization is available for seamless data transfer with desktop versions.

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Dive+ World's Diving Community
Dive+ World's Diving Community
Dive+ World's Diving Community
Color correction & dive logs
Free

Enhance your underwater photos and videos with one-tap color correction. Connect with a global community of divers, share experiences, and access valuable diving information. Explore dive sites and meet fellow enthusiasts worldwide.

Underwater color correctionGlobal diver communityDive site information
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SDI TDI ERDI PFI
SDI TDI ERDI PFI
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tdisdi.com Mobile App
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This app serves as a comprehensive diving companion, allowing users to log dives, manage digital certifications, update personal profiles, and find dive centers and instructors globally. It also provides access to exclusive content from multiple diving agencies.

Dive log with offline supportDigital certification access and sharingPersonalized profile management
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Diveplanner Tec & Rec
Diveplanner Tec & Rec
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Plan your dives in seconds !
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Plan technical and recreational scuba dives with detailed gas management, decompression schedules, and contingency planning. This tool helps divers quickly create and share dive plans for various depths and conditions.

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SCUBAzen : Ocean Dive Prep
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