Glaucus

GLAUCUS is the definitive checklist app for technical divers operating closed-circuit rebreathers (CCR). The app organizes the entire assembly and pre-dive verification process for your equipment.

SUPPORTED MODELS
- KISS Sidewinder
- Diverite O2ptima CM (Choptima) — coming soon

REBREATHER ASSEMBLY
Complete assembly checklist with 23 steps organized into 4 phases:
- Phase 1 — O-Ring lubrication
- Phase 2 — Sorb (replace/keep decision with remaining time calculation)
- Phase 3 — Mechanical assembly
- Phase 4 — Online tests (battery, O₂ sensors, linearity, negative and positive pressure)

Each phase can be accessed in any order. Your session is saved automatically — pause and resume at any time.

SMART SENSOR TESTS
- mV readings in air with color-coded safety ranges (green/yellow/red)
- Stabilization hints based on manufacturer specifications
- Automatic linearity calculation with 2% and 5% thresholds
- Negative and positive pressure tests with 3-minute timer, visual progress bar and drift calculation

PRE-DIVE CHECK
Complete verification before every dive with 8 steps:
- Mushroom valves (BOV/DSV)
- Battery with voltage range validation
- O₂, diluent and bailout cylinder pressures
- Cylinders open and displays on
- Negative and positive pressure tests with mV readings
- 5-minute loop pre-breathe with timer
- Bailout connection
- S-Drill reminder with your buddy

DIVE LOG
- Complete records: depth, bottom time, gradient factors (GF), CNS%, buddy, location
- Shearwater Cloud CSV import with dive profile
- Dive profile chart (depth × time)
- Full history of assemblies, pre-dives and dives

PDF REPORTS
Generate and share professional assembly and pre-dive reports with all technical data: sensor readings, pressure test results, drift and the status of every step.

LANGUAGES
Available in Portuguese (Brazil), English and Spanish.

PRIVACY AND OFFLINE OPERATION
- Your dive data is stored on your device — the app works offline, on the boat or in the field
- Secure sign-in with Google or email and password
- Account deletion directly in the app

ABOUT GLAUCUS
Glaucus is a sea deity in Greek mythology — a fisherman who discovered a magical herb and gained the ability to live underwater. The name also honors Glaucus atlanticus, the fascinating blue sea dragon.

Built with passion by a CCR technical diver, for CCR technical divers. Your safety underwater begins at the surface.

Contact: [email protected]
Website: https://glaucusapp.com