--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Submersion Dive Log" developer_entity: "Eric Griffin" bundle_id: "app.submersion" app_store_id: "6757456915" category: "Sports" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-08-03" report_date: "2026-08-23" last_verified: "2026-08-23T00:00:00.000Z" report_version: "1.7.2" total_reviews: 5 overall_rating: 4 sentiment: "Mixed" sentiment_score: 60 confidence: "medium" confidence_score: 0.45 top_praise_theme: "Modern dive log interface provides a clean experience for tracking underwater activity and equipment" top_complaint_theme: "Unresolved bug reports and closed tickets leave users feeling ignored regarding persistent technical issues" review_sample_size: 2 total_review_count: 2 analyzed_review_count: 2 data_age_days: 75 momentum_velocity: "maintenance" intelligence_version: 3 tags: ["sports", "free", "mixed sentiment", "mobile app", "app review", "app analysis", "recreational", "technical", "divers"] canonical_url: "https://marlvel.ai/apps/submersion-dive-log" license: "CC-BY-NC 4.0" content_version: "v2" --- # Submersion Dive Log Intelligence Report ## TL;DR {#tldr} - **Category**: Sports · Free - **Signal**: Rating 4 · Sentiment Mixed - **Recent focus**: Unresolved bug reports and closed tickets leave users feeling ignored regarding persistent technical issues (top complaint) · Modern dive log interface provides a clean experience for tracking underwater activity and equipment (top praise) > **TL;DR:** Submersion Dive Log is a sports app by Eric Griffin, rated 4/5 by 5 users, with Mixed user sentiment (60/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Submersion Dive Log shows Mixed sentiment (4/5 from 5 reviews) - users praise modern dive log interface provides a clean experience for tracking underwater activity and equipment but report issues with unresolved bug reports and closed tickets leave users feeling ignored regarding persistent technical issues. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4/5 (5 reviews) | | **User Mood** | Mixed | | **Category** | Sports | | **Developer** | Eric Griffin | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 75d | ## Metadata & Market Performance - **Publisher:** Eric Griffin - **Category:** Sports - **Target Audience:** Recreational and technical divers who prioritize data ownership, offline functionality, and integration with specialized dive hardware. - **Platforms:** iOS - **Version Reviewed:** 1.7.2 - **Report Date:** 2026-08-23 - **Signal Count:** 2 reviews analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 6757456915 - **Bundle ID:** app.submersion - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-23 ## Executive Snapshot **What it is:** Submersion Dive Log is an open-source dive logging application for iOS that enables direct data import from over 300 dive computer models. **Why users hire it:** The app removes the manual entry friction of paper logs by automating profile imports and providing technical divers with built-in decompression algorithm analysis. ## App DNA (Features & Intent) - **[Differentiator] Dive Computer Integration:** Direct USB and Bluetooth connectivity to 300+ dive computer models with automatic duplicate detection. - **[Differentiator] Technical Diving Analysis:** Bühlmann ZH-L16C decompression algorithm with gradient factor configuration and real-time gas tracking. * *User Intent:* Users want visibility into their own performance and progress. - **[Differentiator] Open Data Export:** Export functionality for UDDF, CSV, and PDF formats to ensure data portability. ## Market Position {#market-position} 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. ## Monetization Strategy - **Model:** Free - **Tiers:** Completely free with no subscriptions or premium feature gates - **Analysis:** The app operates as a free, open-source tool with no monetization, prioritizing user acquisition and data ownership over revenue generation. ## 🟡 User Sentiment (Medium Confidence: 2 of 2 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4/5 - **Platform Split:** iOS 4.0/5 (5 ratings) - **Overall Sentiment:** Mixed ### Top Praises - **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** ### Top Complaints (Impact Areas) - **Unresolved bug reports and closed tickets leave users feeling ignored regarding persistent technical issues** ## SWOT Analysis {#swot} **Core Strengths:** - 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. **Growth Levers:** - 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. ## Recent Changes (v2 → v3) {#recent-changes} 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. **Overall trend**: Stable **Compared at**: 2026-08-23 ### High-impact changes - **[Shifted] Open-source model re-evaluated** (positioning) ### Medium-impact changes - **[Shifted] Weakness and Threat refinement** (swot) ## What's New - **Latest (v1.7.2, 2 weeks ago):** General bug fixes and stability improvements. ## App Momentum (Maintenance) {#momentum} - Ships minor bug fixes every three weeks. - Last major release unavailable in last six months. > **Cadence:** 1 total versions · 0 majors in last 6 months · 19 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Submersion Dive Log is a sports app that is completely free. It holds a 4/5 rating from 5 reviews. > **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. **Best for:** Recreational and technical divers who prioritize data ownership, offline functionality, and integration with specialized dive hardware. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit bug tracking workflow because users report tickets are closed without resolution → improve user trust ### Outlook: Mixed 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. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4/5 | | Total Reviews | 5 | | Sentiment | Mixed (60/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Submersion Dive Log** (this app) | 4/5 | Mixed | Eric Griffin | | [DraftKings Predictions](https://marlvel.ai/apps/draftkings-predictions) | 4.8/5 | Mixed | DraftKings | | [DraftKings: Sports & Casino](https://marlvel.ai/apps/draftkings-sportsbook-casino) | 4.8/5 | n/a | DraftKings | | [FanDuel Predicts](https://marlvel.ai/apps/fanduel-predicts) | 4.8/5 | n/a | FanDuel, Inc. | | [Fish AI - AI Fishing App](https://marlvel.ai/apps/com-fishai-app) | 4.7/5 | n/a | GymBros Inc. | | [NBA: Live Games & Scores](https://marlvel.ai/apps/nba-live-games-scores) | 4.5/5 | Mixed | NBA MEDIA VENTURES, LLC | ## Company Profile - **Developer:** Eric Griffin - **Website:** [https://submersion.app](https://submersion.app) ## Data Sources & Links - **App Store ID:** 6757456915 - **Dev Site:** [Official Website](https://submersion.app) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*DraftKings Predictions*](https://marlvel.ai/apps/draftkings-predictions) (DraftKings) · 4.8/5 Rating - [*DraftKings: Sports & Casino*](https://marlvel.ai/apps/draftkings-sportsbook-casino) (DraftKings) · 4.8/5 Rating - [*FanDuel Predicts*](https://marlvel.ai/apps/fanduel-predicts) (FanDuel, Inc.) · 4.8/5 Rating - [*Fish AI - AI Fishing App*](https://marlvel.ai/apps/com-fishai-app) (GymBros Inc.) · 4.7/5 Rating - [*NBA: Live Games & Scores*](https://marlvel.ai/apps/nba-live-games-scores) (NBA MEDIA VENTURES, LLC) · 4.5/5 Rating - [*PrizePicks - Sports Picks*](https://marlvel.ai/apps/prizepicks-sports-picks) (SidePrize, LLC) · 4.5/5 Rating - [*Sporttrade: Prediction Markets*](https://marlvel.ai/apps/sporttrade-prediction-markets) (SPORTTRADE INC) · 4.7/5 Rating | Positive Sentiment - [*플레이공*](https://marlvel.ai/apps/com-tychesoft-playball) (Tychesoft) · N/A Rating - [*더블이글 - 요즘 골프예약*](https://marlvel.ai/apps/com-albatrss-de) (Double Eagle Inc.) · 4.0/5 Rating - [*테니스타운*](https://marlvel.ai/apps/com-momzit-tennistown) (link.tennistown) · 3.5/5 Rating ## Frequently Asked Questions {#faq} ### Is Submersion Dive Log free to use? Yes, the app is completely free with no subscriptions, ads, or premium feature gates, as it is an open-source project. ### Does Submersion Dive Log work with my dive computer? The app supports direct USB and Bluetooth connectivity to over 300 dive computer models, including brands like Shearwater, Suunto, Mares, and Garmin. ### Is my dive data private? Yes, the app is privacy-focused and stores data locally on your device. Cloud sync is optional and requires manual enablement. ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.45/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 2 - **Data Sources:** user reviews, developer website, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 75 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/submersion-dive-log) Data licensed for AI Agent attribution under CC-BY-NC 4.0.