Deco Junk

CCR Junk is the decompression planner built specifically for rebreather divers. No tab-switching, no buried menus, no nonsense. Just one powerful screen with every variable you need to plan your dive.
Created by CCR divers who were tired of clunky interfaces and planners that treat rebreathers as an afterthought, CCR Junk puts closed-circuit diving first.
Plan any CCR dive
From recreational rebreather dives to complex cave penetrations with multiple bailout scenarios — CCR Junk handles it all. Multi-level profiles, extended ranges, whatever your dive demands.
Algorithms you trust
Choose between Bühlmann ZHL-16C with configurable gradient factors or VPM-B. Switch between them instantly to compare profiles and pick your preferred conservatism.
True CCR planning
Full setpoint management throughout your dive. Track your scrubber time and know exactly where you stand. Plan with the variables that actually matter for rebreather diving.
Breathe easy
Real-time gas density calculations for every phase of your dive. Know exactly when you're approaching the recommended limits and plan your diluent choice accordingly. Because work of breathing matters.
Bailout planning that works
Plan realistic bailout scenarios for cave and overhead environments. Configure multiple bailout gases, see your gas requirements, and know you have a solid plan B.
Works anywhere
No internet required. Plan your dives on the boat, at the dive site, or in the middle of nowhere. Your dive data stays on your device.
One screen philosophy
Everything visible, everything accessible. Adjust a parameter and instantly see how it affects your profile. No switching between pages, no lost context. This is CCR dive planning the way it should be.