Caveradar vs Fathom Dive Planner

Caveradar. Know before you dive. Plan your cave dives with confidence using recent, structured condition reports — plus weather context and directions — whether you're planning tomorrows' dive in Florida, next weeks' dives in Mexico or next years' trip to France. What you get: • Recent cave-condition reports: visibility + flow + hazards (structured, easy to compare) • Weather context for every site • Driving directions + access context to simplify planning • Offline caching: key info stays available at the site even with weak signal • Partner listings in-app: find endorsed instructors and dive centers Contribute (fast, no noise): • Add a report in seconds using dropdown-only inputs - no typing • Every report helps keep conditions fresh for the next team Coverage: • France: Lot, Hérault, Ardèche and Doubs (new addition!) • Germany: nationwide coverage • Switzerland • Italy: most regions (expanding) • UK: some caves, expanding • USA: Florida • Mexico: Quintana Roo • Norway • Sweden • Finland • New Zealand • Australia • Spain (new addition!) Built for cave divers, by cave divers. Important: The information presented on this platform is not a substitute for proper cave diving training, certification, personal site assessment, or professional guidance.

Fathom is a native iPhone and iPad app for dive planning and logging. Build open- and closed-circuit decompression schedules with configurable gradient factors, then record every dive you make in the built-in logbook, and link each logged dive back to the plan that produced it. Build single- or multi-level dive plans, manage your gas mixes and tanks, and review every parameter that goes into your decompression schedule before you get in the water. After the dive, capture depth, time, gases, tanks, buddies, locations, and tags in a logbook designed for the same workflow. PLANNING • Configurable gradient factors (default GF 20/85) • Multi-level dive plans with automatic gas selection • Full trimix and heliox support, in addition to air and nitrox • Closed-circuit rebreather plans: fixed setpoints with a switch depth, and travel diluent for deep dives • Open-circuit bailout schedules computed from the worst point of the dive • Repetitive dives: tissue loading, CNS, and OTU carry across surface intervals • Custom gas mixes and standard preset catalogue • Tank and cylinder tracking with SAC and per-tank gas usage • Minimum gas (rock-bottom) reserve required to bring you and your buddy back from depth • NDL (no-decompression limit) at any depth • MOD, END, and gas density for every level, with warnings when a mix gets too dense • CNS clock and OTU oxygen exposure tracking LOGBOOK • Log every dive with depth, time, gases, tanks, location, buddies, and tags • Link each logged dive to its original plan • Browse and search your dive history GENERAL • Metric and imperial units throughout • iCloud sync across your iPhone, iPad, and Mac • One purchase unlocks Fathom on iPhone, iPad, and Mac IMPORTANT Fathom is a planning tool, not a substitute for diver training, qualified instruction, or the judgment of a certified dive professional. Always follow the procedures taught in your training agency, the limits of your certification, and your own dive computer. Decompression diving carries inherent risks. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/