poseidon reef

Dowload for Windows
All platforms

on all platforms

Dowload for Windows


Plan your next diving adventure in the simple to use, easy to navigate interactive planner. Diving an open circuit or rebreather? Doesn't matter. The Reef app has different dive modes and deco models available to match your setup and preferences regardless of level.

Choose between single dives or a series of dives and let the app calculate needed decompression stops. Easily tune the gradient factors to see the difference in dive time and get a summary of the result as well as a detailed list of run time and gas switches if applicable.


Safe diving made easier. Get the most out of Reef by connecting your Poseidon dive computer and bring your plan to the water. Interact an analyse your dives using the chart functionality. Toggle the data you want to visualize and zoom in on portions of the dive you are interested in.

Our M28 diving computer can be used as a stand-alone computer, a back-up or together with our Solid-state O2 sensor connected to any other rebreather on the market.


Become a better diver with the advanced dive log that helps you analyse your recent experiences under water in detailed data and user-friendly designed graphics.

Visualize data such as depth, water temperature, tank pressure, loop temperature, po2, alarms and more.

Personalize your log with pictures, notes and get your hands on every detail available from standard dive stats to environmental information and device statuses.

Compare data with your instructor, buddy, team or easily share your experiences with your family and social community whether it is online or in real life.

Designed by divers. For divers.

Dowload for Windows
Reef App Mockup



  • Comprehensive overview of all planned dives
  • Sort and filter
  • Single or series of dives
  • OC (Open Circuit) and CCR (Closed Circuit Rebreather)
  • Unlimited numbers of tanks
  • DCAP and Bühlmann deco mode
  • Bailout scenario
  • Gas content configuration


  • Comprehensive and detailed overview of all your dives
  • Advanced sort and filter
  • Import and export functionality with UDDF*
  • Personalize dives with custom tags, images, location
  • Interact with your dives in the chart fuctionality
  • Visualize complex data i.e tank pressure, pO2, etc.
  • Toggle data you want to visualize
  • Zoom in on portions of the dive you are interested in

    Universal Dive Data Format


  • Connect your Poseidon M28 dive computer through WiFi
  • Information about connected submodules
  • Download and backup dives in the cloud
  • Service information
  • Total dive time
  • Firmware information
  • Bluetooth connection to SE7EN+

*Only available for Android devices