--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "TrueDoF-Intro DoF Calculator" developer_entity: "George Douvos" bundle_id: "com.douvos.TrueDoF-Intro" app_store_id: "519600295" category: "Photo & Video" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2018-09-27" report_date: "2026-09-18" last_verified: "2026-09-18T00:00:00.000Z" report_version: "3.0" total_reviews: 9 overall_rating: 3.9 sentiment: "Mixed" sentiment_score: 60 confidence: "medium" confidence_score: 0.6 top_praise_theme: "The concise and logical presentation of depth of field settings aids landscape photographers in planning shots" top_complaint_theme: "Technical disagreement regarding diffraction effects leads users to perceive the depth of field calculations as incorrect" review_sample_size: 16 total_review_count: 16 analyzed_review_count: 16 data_age_days: 13 momentum_velocity: "zombie" intelligence_version: 2 tags: ["photo & video", "freemium", "mixed sentiment", "mobile app", "app review", "app analysis", "photographers", "seeking", "precise"] canonical_url: "https://marlvel.ai/apps/truedof-intro-dof-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # TrueDoF-Intro DoF Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Photo & Video · Freemium - **Signal**: Rating 3.89 · Sentiment Mixed - **Recent focus**: Technical disagreement regarding diffraction effects leads users to perceive the depth of field calculations as incorrect (top complaint) · The concise and logical presentation of depth of field settings aids landscape photographers in planning shots (top praise) > **TL;DR:** TrueDoF-Intro DoF Calculator is a photo & video app by George Douvos, rated 3.89/5 by 9 users, with Mixed user sentiment (60/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** TrueDoF-Intro DoF Calculator shows Mixed sentiment (3.89/5 from 9 reviews) - users praise the concise and logical presentation of depth of field settings aids landscape photographers in planning shots but report issues with technical disagreement regarding diffraction effects leads users to perceive the depth of field calculations as incorrect. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3.89/5 (9 reviews) | | **User Mood** | Mixed | | **Category** | Photo & Video | | **Developer** | George Douvos | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Medium (0.6/1.0) | | **Data Age** | 13d | ## Metadata & Market Performance - **Publisher:** George Douvos - **Category:** Photo & Video - **Target Audience:** Photographers seeking precise depth of field calculations that account for diffraction effects. - **Platforms:** iOS - **Version Reviewed:** 3.0 - **Report Date:** 2026-09-18 - **Signal Count:** 16 reviews analyzed - **Confidence:** Medium (0.6/1.0) - **App Store ID (iOS):** 519600295 - **Bundle ID:** com.douvos.TrueDoF-Intro - **Data Window:** Analysis based on signals collected up to 2026-09-18 ## Executive Snapshot **What it is:** TrueDoF-Intro is a depth of field calculator for landscape photographers on iOS that accounts for diffraction effects. **Why users hire it:** It replaces manual estimation with a diffraction-aware algorithm, removing the cognitive cost of calculating sharpness limits in the field. ## App DNA (Features & Intent) - **[Differentiator] Diffraction-aware Depth of Field Calculation:** Calculates depth of field while accounting for diffraction effects to determine image sharpness. - **[Standard] Real-time Output Updates:** Updates calculations instantly as users slide pointers to adjust focus distance and aperture. - **[Standard] Simplified Slider Interface:** Adjusts focus distance and aperture using slide-based controls without requiring constant finger contact. ## Market Position {#market-position} TrueDoF-Intro occupies a technical niche in the Photo & Video category, relying on a diffraction-aware algorithm to differentiate from standard calculators. The seven-year update gap limits its ability to compete with modern, frequently updated photography tools. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free Intro version, Paid Pro version - **Analysis:** TrueDoF-Intro acts as a lead-generation tool to drive conversions to the paid Pro version. ## 🟡 User Sentiment (Medium Confidence: 16 of 16 reviews analyzed) {#user-sentiment} - **Overall Rating:** 3.89/5 - **Platform Split:** iOS 3.9/5 (9 ratings) - **Overall Sentiment:** Mixed ### Top Praises - **The concise and logical presentation of depth of field settings aids landscape photographers in planning shots** - **Ad-free experience and clean interface design provide a distraction-free tool for professional photography planning** ### Top Complaints (Impact Areas) - **Technical disagreement regarding diffraction effects leads users to perceive the depth of field calculations as incorrect** ## SWOT Analysis {#swot} **Core Strengths:** - Diffraction-aware algorithm establishes technical authority - Ad-free interface reduces cognitive load during field planning **Growth Levers:** - Manual numeric entry would resolve precision complaints - Pixel-size parameters would align with modern sensors ## What's New - **Latest (v3.0, 7 years ago):** Redesigned focus and aperture controls with a slide-to-adjust interface and updated visual styling for iPhone X compatibility. ## App Momentum (Zombie) {#momentum} - Dormant since 2018. - Maintenance-mode status. > **Cadence:** 1 total versions · 1 majors in last 6 months · 2912 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} TrueDoF-Intro DoF Calculator is a photo & video app that is free with in-app purchases. With a 3.89/5 rating from 9 reviews, it shows mixed user reception. > **Bottom Line:** TrueDoF-Intro maintains a technical moat via its diffraction algorithm, but the seven-year update gap risks obsolescence. A pivot to include user-configurable diffraction settings would resolve the primary sentiment divide and stabilize the user base. **Best for:** Photographers seeking precise depth of field calculations that account for diffraction effects. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Add user-configurable diffraction settings because users perceive the current math as incorrect → resolve primary sentiment divide ### Outlook: Stable Users report: The photography tool market is consolidating around apps that support high-resolution sensor data, leaving TrueDoF-Intro exposed due to its stagnant development cadence. Addressing the diffraction-math divide is the only path to preventing further sentiment erosion and maintaining its niche authority. - 🔴 The seven-year update gap (last release 2018) signals a maintenance-only state, which risks user churn as modern sensor requirements evolve. - ⚪ The loyal user base among landscape photographers provides a stable, albeit small, foundation that persists despite the lack of recent feature investment. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3.89/5 | | Total Reviews | 9 | | Sentiment | Mixed (60/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **TrueDoF-Intro DoF Calculator** (this app) | 3.89/5 | Mixed | George Douvos | | [AI Catch: AI Video Generator](https://marlvel.ai/apps/com-prominent-aicatch) | 4.4/5 | n/a | Prominent Fortune PTE. LTD | | [AI Video Editor・Trim, Compress](https://marlvel.ai/apps/ai-video-editor-trim-compress) | N/A/5 | N/A | Ankitbhai Jivani | | [Cantina: AI Video & Characters](https://marlvel.ai/apps/is-signal-ios) | 4.8/5 | N/A | Cantina, Inc | | [CapCut: Photo & Video Editor](https://marlvel.ai/apps/capcut-photo-video-editor) | 4.1/5 | Mixed | Bytedance Pte. Ltd | | [Instagram](https://marlvel.ai/apps/instagram) | 4.3/5 | n/a | Instagram, Inc. | ## Company Profile - **Developer:** George Douvos - **Website:** [https://www.georgedouvos.com](https://www.georgedouvos.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/truedof-intro-dof-calculator/id519600295?uo=4) - **Dev Site:** [Official Website](https://www.georgedouvos.com) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*AI Catch: AI Video Generator*](https://marlvel.ai/apps/com-prominent-aicatch) (Prominent Fortune PTE. LTD) · 4.4/5 Rating - [*AI Video Editor・Trim, Compress*](https://marlvel.ai/apps/ai-video-editor-trim-compress) (Ankitbhai Jivani) · N/A Rating - [*Cantina: AI Video & Characters*](https://marlvel.ai/apps/is-signal-ios) (Cantina, Inc) · 4.8/5 Rating - [*CapCut: Photo & Video Editor*](https://marlvel.ai/apps/capcut-photo-video-editor) (Bytedance Pte. Ltd) · 4.1/5 Rating - [*Instagram*](https://marlvel.ai/apps/instagram) (Instagram, Inc.) · 4.3/5 Rating - [*Lightroom: AI Photo Editor*](https://marlvel.ai/apps/lightroom-ai-photo-editor) (Adobe Inc.) · 4.8/5 Rating | Positive Sentiment - [*Picsart AI Photo Editor, Video*](https://marlvel.ai/apps/picsart-ai-photo-editor-video) (PicsArt, Inc.) · 4.3/5 Rating - [*Video Star*](https://marlvel.ai/apps/com-frontierdesign-videostar) (Frontier Design Group) · 3.5/5 Rating - [*짤봇*](https://marlvel.ai/apps/blackturtle2-jjalbot-ios) (jaesung Lee) · N/A Rating - [*예쁜 사진 - 좋은 하루의 시작*](https://marlvel.ai/apps/kwonkunkun-goodmorning) (KunWoo Kwon) · N/A Rating ## Frequently Asked Questions {#faq} ### Is TrueDoF-Intro accurate for modern digital cameras? Users report mixed experiences; while the diffraction-aware algorithm is praised for technical depth, some argue it does not accurately reflect modern high-resolution sensor performance, leading to requests for pixel-size parameter integration. ### How does TrueDoF-Intro compare to other DoF calculators? TrueDoF-Intro distinguishes itself by including diffraction effects in its calculations, which is not standard in most calculators. However, it lacks support for macro distances found in some rival tools. ### Does TrueDoF-Intro contain advertisements? No, users frequently highlight the ad-free experience as a primary reason for preferring this tool over other photography calculators. ### What is a good alternative for macro photography? Users suggest looking for calculators that explicitly support macro distance calculations, as TrueDoF-Intro's minimum focus distance is cited as insufficient for specialized close-up workflows. ## 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:** 0.6/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 16 - **Data Sources:** user reviews, developer website, company about page, 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:** 13 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/truedof-intro-dof-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.