Submersion Dive Log
By Eric Griffin
Submersion Dive Log is an open-source dive logging application for iOS that enables direct data import from over 300 dive computer models.
The App DNA
What makes this app unique?
The app removes the manual entry friction of paper logs by automating profile imports and providing technical divers with built-in decompression algorithm analysis.
For Recreational and technical divers who prioritize data ownership, offline functionality, and integration with specialized dive hardware.
What does it look like?
Key features
Direct USB and Bluetooth connectivity to 300+ dive computer models with automatic duplicate detection.
Bühlmann ZH-L16C decompression algorithm with gradient factor configuration and real-time gas tracking.
Export functionality for UDDF, CSV, and PDF formats to ensure data portability.
How much does it cost?
The app operates as a free, open-source tool with no monetization, prioritizing user acquisition and data ownership over revenue generation.
Velocity
Maintenance developmentperformanceShow more...
Submersion Dive Log currently operates on a maintenance schedule, with the latest release arriving 19 days ago. The development history is limited to minor bug fixes, indicating a focus on stability rather than new feature expansion. Given the current cadence, the app remains in a stable but quiet state with no recent major feature additions or live operations.
Who built it?
User Sentiment
What do users think recently?
The recent review mood reads mixed. Users appreciate modern dive log interface provides a clean experience for tracking underwater activity and equipment and open-source and private data model appeals to users seeking a transparent dive logging tool.
How are ratings & reviews evolving?
What users say, by theme
- Modern dive log interface provides a clean experience for tracking underwater activity and equipment
- Open-source and private data model appeals to users seeking a transparent dive logging tool
- Unresolved bug reports and closed tickets leave users feeling ignored regarding persistent technical issues
2 of 2 recent reviews analyzed · limited sample
Read the full review analysisUnlock 1 more frustration theme and 1 user request, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Submersion Dive Log
How's the Sports market?
Submersion Dive Log occupies a niche position in the Sports category, maintaining a 4.0-star rating across 5 reviews. The lack of a commercial monetization model differentiates it from category incumbents, though the current maintenance-only update cadence limits its ability to capture broader market share.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for Submersion Dive Log
Where is it heading?
The dive logging market is consolidating around tools that offer reliable cross-device sync and responsive support. Submersion Dive Log remains exposed due to its maintenance-only cadence, which prevents it from addressing the technical friction that drives users toward commercial competitors.
- Unresolved bug reports and closed tickets leave users feeling ignored, which compounds the risk of churn to commercial alternatives.
- Maintenance-only update cadence suggests limited feature expansion in the near term, keeping the app in a defensive posture against better-funded rivals.
The SWOT
- Direct integration with 300+ dive computers via USB/Bluetooth removes manual entry friction.
- Open-source data model provides a defensible barrier against proprietary lock-in.
- Bühlmann ZH-L16C decompression algorithm support enables technical diving workflows.
- Implementing a community-driven dive site database could increase engagement.
- Improving the import workflow for legacy log formats would lower the barrier for switching from rival apps.
Next best moves
Audit bug tracking workflow because users report tickets are closed without resolution → improve user trust
+ 1 more prioritized moveThe counter-intuitive read
The open-source model is a liability rather than a strength here…
Read the full takeSince the last report: The competitive narrative shifted from a neutral view of the open-source model to a critical assessment of its impact on user churn and support capacity. No functional changes to features, pricing, or user sentiment occurred during this period.
Bottom line
Submersion Dive Log maintains a strong technical foundation through its open-source model and hardware integration, but the lack of active support and sync capabilities risks alienating the core user base. Addressing these technical gaps is essential to prevent churn to commercial alternatives.
Unlock 3 critical frictions, 2 market threats, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is Submersion Dive Log free to use?
Does Submersion Dive Log work with my dive computer?
Is my dive data private?
Sources
- [1] App Store
Report last updated