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.

device manager

Rebreather management is made hassle-free with the Reef app, which includes the convenience of keeping your firmware up-to-date. Easily access updates that are fully compatible with your rebreather system.

Designed by divers. For divers.

Dowload for Windows
Reef App Mockup



  • Keep track of all your upcoming dives with a comprehensive overview
  • Sort, filter, and organize your dive plans
  • Plan for a single dive or a series of dives
  • Suitable for OC (Open Circuit) and CCR (Closed Circuit Rebreather) dives
  • Supports an unlimited number of tanks
  • Choose between DCAP and Buhlmann decompression models
  • Bailout scenario
  • Configure gas content


  • Get a comprehensive and detailed overview of all your dives
  • Easily sort and filter to find specific dives
  • Import and export dives effortlessly in UDDF*
  • Personalize dives with custom details, photos, location and more
  • Engage with your dives using the interactive chart functionality
  • Visualize intricate data like tank pressures, pO2, loop temperature, etc
  • Choose the data points you want to see
  • Zoom in on portions of the dive you are interested in

    Universal Dive Data Format


  • Connect your Poseidon M28 dive computer through WiFi
  • View details about connected submodules
  • Download, store, and back up your dives in the cloud
  • Access vital service information
  • Monitor total dive time
  • Stay updated with firmware information and easily upgrade your dive hardware firmware to ensure optimal performance