--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "DOF Slider: Focus Calculator" developer_entity: "Mihai alexandru Bold" bundle_id: "com.inpos.dof" app_store_id: "654949121" category: "Photo & Video" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-10-20" report_date: "2026-11-07" last_verified: "2026-11-07T00:00:00.000Z" report_version: "2.8.0" total_reviews: 23 overall_rating: 3.7 confidence: "low" confidence_score: 0.3 data_age_days: 4 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["photo & video", "freemium", "mobile app", "app review", "app analysis", "photographers", "filmmakers", "requiring"] canonical_url: "https://marlvel.ai/apps/dof-slider-focus-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # DOF Slider: Focus Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Photo & Video · Freemium - **Signal**: Rating 3.7 > **TL;DR:** DOF Slider: Focus Calculator is a photo & video app by Mihai alexandru Bold, rated 3.7/5 by 23 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** DOF Slider: Focus Calculator is a photo & video app by Mihai alexandru Bold. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3.7/5 (23 reviews) | | **Category** | Photo & Video | | **Developer** | Mihai alexandru Bold | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.3/1.0) | | **Data Age** | 4d | ## Metadata & Market Performance - **Publisher:** Mihai alexandru Bold - **Category:** Photo & Video - **Target Audience:** Photographers and filmmakers requiring precise depth of field calculations for digital, film, and cinema formats. - **Platforms:** iOS - **Version Reviewed:** 2.8.0 - **Report Date:** 2026-11-07 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.3/1.0) - **App Store ID (iOS):** 654949121 - **Bundle ID:** com.inpos.dof - **Data Window:** Analysis based on signals collected up to 2026-11-07 ## Executive Snapshot **What it is:** DOF Slider: Focus Calculator is a technical tool for photographers and filmmakers to calculate depth of field and focus limits on iOS. **Why users hire it:** The app removes the cognitive cost of manual depth-of-field calculations in the field by providing a visual, offline-first interface that works without internet connectivity. ## App DNA (Features & Intent) - **[Differentiator] Live Scene Visualization:** Interactive animation showing depth of field effects on a virtual scene with adjustable focus and aperture. - **[Differentiator] Foldable Device Layouts:** Adaptive UI that shifts controls and results based on device hinge state and orientation. - **[Standard] Camera Profile Database:** Library of digital, film, and cinema camera formats with pre-calculated circle of confusion values. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} DOF Slider: Focus Calculator maintains a specialized position in the Photo & Video category, holding a 3.7-star rating across 23 reviews. The focus on niche hardware support differentiates it from generalist calculators that lack adaptive layouts for foldable devices. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with standard camera profiles, One-time in-app purchases for additional camera packs and specialized ranges - **Analysis:** Freemium model using one-time purchases to unlock specialized camera data, avoiding recurring subscription costs. ## SWOT Analysis {#swot} **Core Strengths:** - Adaptive UI for foldable devices establishes technical authority - Offline-first architecture removes connectivity dependencies for field use **Growth Levers:** - Expanding the camera profile database to include emerging cinema formats ## What's New - **Latest (v2.8.0, 2 weeks ago):** Introduced dynamic folding layouts for iPhone Duo, a live depth-of-field scene visualizer, a redesigned calculator, and a new navigation bar with integrated camera search. ## App Momentum (Maintenance) {#momentum} - Shipped adaptive layouts for foldable devices. - Integrated live focus depth visualization tool. - Redesigned calculator interface and navigation. > **Cadence:** 1 total versions · 1 majors in last 6 months · 17 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} DOF Slider: Focus Calculator is a photo & video app that is free with in-app purchases. It holds a 3.7/5 rating from 23 reviews. > **Bottom Line:** DOF Slider: Focus Calculator retains its technical niche through foldable-device support, but the 3.7-star rating signals that onboarding friction must be addressed to prevent churn to generalist alternatives. **Best for:** Photographers and filmmakers requiring precise depth of field calculations for digital, film, and cinema formats. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Audit onboarding flow because the 3.7-star rating indicates user friction → improve retention ### Outlook: Stable The market for technical photography tools remains stable, but DOF Slider: Focus Calculator must maintain its technical edge to prevent churn to generalist alternatives. The latest release shows active investment in form-factor support, which is critical for maintaining relevance among professional users who adopt new hardware early. - 🟢 The latest release (v2.8.0) demonstrates active investment in form-factor support, which is critical for maintaining relevance among professional users. - ⚪ The 3.7-star rating indicates that while the feature set is technically sound, the user experience requires refinement to improve sentiment. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3.7/5 | | Total Reviews | 23 | | Confidence | Low | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **DOF Slider: Focus Calculator** (this app) | 3.7/5 | N/A | Mihai alexandru Bold | | [Instagram](https://marlvel.ai/apps/instagram) | 4.3/5 | n/a | Instagram, Inc. | | [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 | ## Company Profile - **Developer:** Mihai alexandru Bold - **Website:** [https://mihaibold.dev/apps/dof-slider/](https://mihaibold.dev/apps/dof-slider/) - **Social:** [Instagram](https://www.instagram.com/mikebld_) · [LinkedIn](https://linkedin.com/in/mihaibold) ## Data Sources & Links - **App Store ID:** 654949121 - **Dev Site:** [Official Website](https://mihaibold.dev/apps/dof-slider/) - **Sources:** Developer website content, About us / company information, App store metadata. ## Related Intel Reports - [*Instagram*](https://marlvel.ai/apps/instagram) (Instagram, Inc.) · 4.3/5 Rating - [*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 - [*Lightroom Photo Editor & Video*](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 - [*Prismatic: A PhotoPrism Client*](https://marlvel.ai/apps/prismatic-a-photoprism-client) (Shuowei Li) · 4.0/5 Rating - [*Shots: Photo & Video Generator*](https://marlvel.ai/apps/com-deepix-animefypic) (DeePix AI) · 4.6/5 Rating | Positive Sentiment - [*Video Star*](https://marlvel.ai/apps/com-frontierdesign-videostar) (Frontier Design Group) · 3.5/5 Rating ## Frequently Asked Questions {#faq} ### Is DOF Slider: Focus Calculator suitable for professional filmmakers? Yes, the app includes profiles for various digital, film, and cinema camera formats, making it a tool for filmmakers needing precise depth-of-field calculations. ### Does DOF Slider: Focus Calculator require an internet connection? No, calculations work offline with the available camera catalog. An internet connection is only needed for catalog updates and in-app purchases. ### What is the difference between the free and paid versions? The free version includes standard camera profiles and calculation ranges. Additional camera packs and specialized ranges like macro or telephoto are available as one-time in-app purchases. ### What are some free alternatives to DOF Slider: Focus Calculator? Users looking for alternatives should consider generalist depth-of-field calculators available on the App Store, though these may lack the specialized foldable-device layouts and live scene visualization found here. ## 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:** 0.3/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** 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:** 4 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/dof-slider-focus-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.