Complete Data Ownership
Your dives stay on your device. Sync to the cloud only if you want to. Export your logbook whenever you want.
Full control over your dive data.
Traditional dive logging solutions either rely on outdated desktop software or mobile applications that restrict data access behind mandatory accounts and proprietary cloud infrastructure. Submersion offers a different approach.
Vendor Independence
Full UDDF 3.2 import and export capability, plus CSV support. Your dive history remains portable, both now and for years to come.
Unified Cross-Platform Experience
Available for iOS, Android, macOS, Windows, and Linux. Consistent logbook functionality and analytics across all devices.
Free, forever
Open-source software licensed under GPL‑3.0. No advertisements. No premium feature restrictions.
For recreational and technical divers.
Simple by default. Advanced when needed.
Dive Documentation
- Complete dive records including conditions, timestamps, and temperatures
- Trip organization with tags, favorites, and detailed notes
- Multi-cylinder configurations with gas mix tracking (air, nitrox, trimix)
Site Management
- GPS coordinate recording with interactive map visualization
- Comprehensive site data: depth ranges, difficulty ratings, hazard documentation
- Automatic location capture with reverse geocoding
Dive Computer Integration
- Direct USB and Bluetooth connectivity
- Incremental download with intelligent duplicate detection
- Support for 300+ models via libdivecomputer
Technical Diving Support
- Bühlmann ZH‑L16C decompression algorithm with gradient factor configuration
- Real-time NDL, ceiling, TTS, CNS, and OTU calculations
- Complete multi-gas dive planning and tracking
A closer look.
A clean interface for comprehensive dive logging.
Dashboard Overview
Recent dives, statistics, and navigation. Local data storage with complete offline functionality.
Efficient Dive Entry
Depth, duration, temperature, conditions, and annotations. Automated numbering and surface intervals.
Comprehensive Records
Location, environmental conditions, and multi-cylinder gas configurations in one view.
Site Database
GPS coordinates, regional data, and automatic reverse geocoding for every dive site.
Interactive Map
All dive sites on an interactive map with intelligent marker clustering.
Equipment Management
Service intervals, gear configurations, and per-dive assignments with reminders.
Dive Statistics
Total dives, bottom time, depth records, and lifetime trends at a glance.
Support
Found a bug or have a feature idea? Open an issue on GitHub.
For other inquiries, email support@submersion.app.
Download Submersion
Comprehensive and open-source. You own your data. No accounts required.
All platforms: