# Poseidon Reef — Plan Dive Analyse > Dive logging, planning, and dive computer management tool for divers. (iPhone/iPad app by Poseidon Diving Systems AB.) - Source: https://appshunter.io/ios/app/poseidon-reef/id1581432645 (this page in markdown: same URL + `.md`) - Developer: [Poseidon Diving Systems AB](https://appshunter.io/developer/567839779) - Category: Sports - Price: Free - Rating: 3.00/5 from 2 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 12.1 · 58 MB - Languages: English - Released: 2021-10-31 - Data updated: 2026-06-02 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/poseidon-reef/id1581432645/reviews.md ## What is Poseidon Reef? Dive into the deep with Reef, the ultimate tool for every diver regardless of experience, level, or dive style. Designed to enhance and prolong your passion for diving, Reef seamlessly extends your diving experience, both before and after the actual dive. With Reef in your pocket, you're always ready to explore. Dive Log > Get a comprehensive and detailed overview of all your dives. > Easily sort and filter to find specific dives. > Import and export dives effortlessly. > 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 Planner > 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 Device Manager > 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. *Only available with Poseidon M28 dive computer ## Key features - Comprehensive dive logging - Detailed dive planning - Support for OC and CCR dives - Unlimited tank support - Decompression model selection - Dive computer connectivity - Cloud backup and firmware updates ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/poseidon-reef/id1581432645/reviews.md ### 1/5 — Not for U.S. *2025-05-16, version 1.3.15* Weight is in kg, pressure in bar. Could not change it to pounds and psi ### 1/5 — A big miss *2021-10-31, version 1.0.0* Had very high hopes, but Poseidon just needs to stick to building regs. I ran a couple of CCR dives in the planner and the numbers are way off. A dive to 175’ for 20 minutes shows a total run time of 220 minutes? That alone gives me 0 confidence in the app. I’ll stick with IDeco Pro. ## Frequently asked questions about Poseidon Reef ### What is Poseidon Reef? Poseidon Reef is a mobile application designed for divers to log, plan, and analyze their dives. It provides detailed overviews of past dives and tools for planning future dives, including support for various dive types and decompression models. ### Does Poseidon Reef have ads? Yes, Poseidon Reef contains advertisements. As a free application, it utilizes ads to support its development and maintenance. ### What dive computers are compatible with Poseidon Reef? Poseidon Reef can connect to the Poseidon M28 dive computer through WiFi. This connection allows for downloading, storing, and backing up dive data, as well as accessing vital service and firmware information. ### Can Poseidon Reef plan for different types of dives? Yes, Poseidon Reef is suitable for planning both OC (Open Circuit) and CCR (Closed Circuit Rebreather) dives. It supports an unlimited number of tanks and offers choices between DCAP and Buhlmann decompression models. ### How often is Poseidon Reef updated? The latest version of Poseidon Reef is 1.3.15, which was last updated on December 5, 2023. Updates typically include new features, bug fixes, and performance improvements. ### What devices can I use Poseidon Reef on? Poseidon Reef is available on multiple Apple devices, including Mac, iPhone, and iPad, as well as iPod. This broad compatibility allows divers to manage their dive data across their preferred devices. ### What is the age rating for Poseidon Reef? Poseidon Reef has an age rating of 4+. This indicates that the content is generally suitable for all ages, with no mature themes or excessive violence. ### What do users think of Poseidon Reef? Based on available data, Poseidon Reef has a rating of 3.0 stars from 2 ratings. User feedback may vary, but this rating suggests a mixed reception. ## Version history (last 5 releases) ### 1.3.15 — 2023-12-05 Fixing several user-submitted bugs and minor layout issues. ### 1.3.14 — 2023-09-28 Update includes minor bug fixes and some new feature requests. If you're missing any features, please reach back to us! ### 1.2.14 — 2022-05-12 Update includes minor bug fixes and some new feature requests. If you're missing any features, please reach back to us! ### 1.2.10 — 2022-03-14 Update includes minor bug fixes and some new feature requests. If you're missing any features, please reach back to us! ### 1.2.8 — 2022-02-22 Update includes some new feature requests. If you're missing any features, please reach back to us! ## Apps similar to Poseidon Reef | App | Rating | Price | Category | | --- | --- | --- | --- | | [SCUBAzen : Ocean Dive Prep](https://appshunter.io/ios/app/scubazen-ocean-dive-prep/id6670226301) | — | Free | Sports | | [DecoPlanner mobile](https://appshunter.io/ios/app/decoplanner-mobile/id1580563324) | — | Free | Sports | | [Diveplanner Tec & Rec](https://appshunter.io/ios/app/diveplanner-tec-and-rec/id1506985833) | 3.0 (4) | Free | Sports | | [Alert Diver](https://appshunter.io/ios/app/alert-diver/id480608662) | 4.0 (4) | Free | Sports | | [Mares App](https://appshunter.io/ios/app/mares-app/id1625641063) | 4.2 (19) | Free | Sports | | [Halcyon Dive Systems - Diving](https://appshunter.io/ios/app/halcyon-dive-systems-diving/id6738069654) | 5.0 (8) | Free | Sports | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-02.*