--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Long Exposure Calculator" developer_entity: "Junel Corales" bundle_id: "com.jcorales.lecalc" app_store_id: "694553269" category: "Photo & Video" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2023-09-28" report_date: "2026-08-13" last_verified: "2026-08-13T00:00:00.000Z" report_version: "3.2.0" total_reviews: 64 overall_rating: 4.4 sentiment: "Thrilled" sentiment_score: 85 confidence: "medium" confidence_score: 0.6 top_praise_theme: "Neutral density filter exposure calculations provide accurate results for photographers of all skill levels" top_complaint_theme: "Lack of an audible alarm at the end of the timer forces users to monitor the screen" review_sample_size: 28 total_review_count: 28 analyzed_review_count: 28 data_age_days: 3 momentum_velocity: "zombie" intelligence_version: 3 tags: ["photo & video", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "photographers", "using", "neutral"] canonical_url: "https://marlvel.ai/apps/long-exposure-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Long Exposure Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Photo & Video · Free - **Signal**: Rating 4.41 · Sentiment Thrilled - **Recent focus**: Lack of an audible alarm at the end of the timer forces users to monitor the screen (top complaint) · Neutral density filter exposure calculations provide accurate results for photographers of all skill levels (top praise) > **TL;DR:** Long Exposure Calculator is a photo & video app by Junel Corales, rated 4.41/5 by 64 users, with Thrilled user sentiment (85/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Long Exposure Calculator maintains Thrilled user sentiment (4.41/5 from 64 reviews), with users consistently praising neutral density filter exposure calculations provide accurate results for photographers of all skill levels. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.41/5 (64 reviews) | | **User Mood** | Thrilled | | **Category** | Photo & Video | | **Developer** | Junel Corales | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Medium (0.6/1.0) | | **Data Age** | 3d | ## Metadata & Market Performance - **Publisher:** Junel Corales - **Category:** Photo & Video - **Target Audience:** Photographers using neutral density filters who need to calculate long exposure times in the field. - **Platforms:** iOS - **Version Reviewed:** 3.2.0 - **Report Date:** 2026-08-13 - **Signal Count:** 28 reviews analyzed - **Confidence:** Medium (0.6/1.0) - **App Store ID (iOS):** 694553269 - **Bundle ID:** com.jcorales.lecalc - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-08-13 ## Executive Snapshot **What it is:** Long Exposure Calculator is a photography utility for calculating shutter speeds with neutral density filters on iOS. **Why users hire it:** The tool removes the cognitive friction of manual math in the field, displacing physical reference cards for photographers. ## App DNA (Features & Intent) - **[Standard] ND Filter Exposure Calculation:** Calculates adjusted shutter speeds for neutral density filters up to 24-stops. * *User Intent:* Users want to quickly find relevant content or features. - **[Standard] Countdown Timer:** Automated timer for exposures lasting 10 seconds or longer. - **[Basic] Simplified Interface:** Single-purpose utility design for quick field calculations. ## Market Position {#market-position} Long Exposure Calculator maintains a niche position as a free, ad-free utility in the Photo & Video category. Its lack of monetization gates contrasts with the subscription-heavy landscape of professional photography tools. ## Monetization Strategy - **Model:** Free - **Tiers:** Free utility with no stated in-app purchases - **Analysis:** The app operates as a free utility with no visible monetization or subscription gates. ## 🟢 User Sentiment (Medium Confidence: 28 of 28 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.41/5 - **Platform Split:** iOS 4.4/5 (64 ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **Neutral density filter exposure calculations provide accurate results for photographers of all skill levels** - **Minimalist interface design ensures the tool remains straightforward and free from distracting advertisements** - **Educational value helps novices demystify the neutral density process through simple and effective tools** ### Top Complaints (Impact Areas) - **Lack of an audible alarm at the end of the timer forces users to monitor the screen** ## SWOT Analysis {#swot} **Core Strengths:** - Simplified interface design ensures quick field calculations without distracting advertisements **Growth Levers:** - Adding aperture input fields would capture professional photography workflows currently underserved by the basic shutter-only calculation ## Recent Changes (v2 → v3) {#recent-changes} The outlook for Long Exposure Calculator has shifted from stable to declining due to persistent, unaddressed user requests for background execution and audible alerts. The app remains in a maintenance-only state, with the narrative now emphasizing the risk of future hardware incompatibility. **Overall trend**: Declining **Compared at**: 2026-08-13 ### High-impact changes - **[Declined] Outlook Trend Downgrade** (positioning) ### Medium-impact changes - **[Added] Hardware Compatibility Risk** (swot) - **[Shifted] Market Narrative Pivot** (positioning) ## What's New - **Latest (v3.2.0, 2 years ago):** General bug fixes and performance improvements. ## App Momentum (Zombie) {#momentum} - Quiet 35 months, no feature updates. - Last release occurred September 2023. > **Cadence:** 1 total versions · 0 majors in last 6 months · 1050 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Long Exposure Calculator is a market-leading photo & video app that is completely free. With a 4.41/5 rating from 64 reviews, it delivers strong user satisfaction. > **Bottom Line:** Long Exposure Calculator serves a clear need for ad-free field calculations, but the lack of background support and audible alerts creates a monitoring burden. Adding these features would address the primary churn drivers identified in user feedback. **Best for:** Photographers using neutral density filters who need to calculate long exposure times in the field. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship background execution support because users report needing to use other apps during long exposures → improve session utility ### Outlook: Declining The photography utility market is shifting toward integrated, subscription-based suites that offer more than single-purpose calculations. Long Exposure Calculator remains exposed due to its lack of feature updates, which will likely lead to user attrition as competitors address the background-execution and alert gaps. - 🔴 The 35-month development gap suggests the app is in maintenance mode, which increases the risk of abandonment following future iOS updates. - 🔴 Persistent user requests for background execution and audible alerts remain unaddressed, signaling a growing gap between user needs and current functionality. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.41/5 | | Total Reviews | 64 | | Sentiment | Thrilled (85/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Long Exposure Calculator** (this app) | 4.41/5 | Thrilled | Junel Corales | | [CapCut: Photo & Video Editor](https://marlvel.ai/apps/capcut-photo-video-editor) | 4.1/5 | Mixed | Bytedance Pte. Ltd | | [Lightroom: AI Photo Editor](https://marlvel.ai/apps/lightroom-ai-photo-editor) | 4.8/5 | Excited | Adobe Inc. | | [Picsart AI Photo Editor, Video](https://marlvel.ai/apps/picsart-ai-photo-editor-video) | 4.3/5 | n/a | PicsArt, Inc. | | [Sora by OpenAI](https://marlvel.ai/apps/sora-by-openai) | 4.7/5 | Excited | OpenAI OpCo, LLC | | [짤봇](https://marlvel.ai/apps/blackturtle2-jjalbot-ios) | N/A/5 | N/A | jaesung Lee | ## Company Profile - **Developer:** Junel Corales - **Website:** [https://lecalc.680labs.com](https://lecalc.680labs.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/long-exposure-calculator/id694553269?uo=4) - **Dev Site:** [Official Website](https://lecalc.680labs.com) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*CapCut: Photo & Video Editor*](https://marlvel.ai/apps/capcut-photo-video-editor) (Bytedance Pte. Ltd) · 4.1/5 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 - [*Sora by OpenAI*](https://marlvel.ai/apps/sora-by-openai) (OpenAI OpCo, LLC) · 4.7/5 Rating | Positive Sentiment - [*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 - [*요술봉 - 배경 이미지 자동 편집, 합성, 삭제*](https://marlvel.ai/apps/cswpd-imageeditor) (SuWon Choi) · 1.0/5 Rating - [*희담필터*](https://marlvel.ai/apps/com-heedamfilter) (Seongmin Lee) · N/A Rating - [*프로카메라 - 고화질 카메라로 바로 편집*](https://marlvel.ai/apps/cswpd-procamera) (SuWon Choi) · N/A Rating - [*ボイス・カメラ*](https://marlvel.ai/apps/app--675) (Satoshi Sato) · N/A Rating ## Frequently Asked Questions {#faq} ### Is Long Exposure Calculator free to use? Yes, the app is a free utility with no stated in-app purchases or subscription gates. ### Does the timer work in the background? No, users report that the app does not support background execution, requiring the screen to remain active during the exposure. ### Can I calculate exposure based on aperture settings? Currently, the app only calculates shutter speeds for neutral density filters and does not factor in aperture settings. ## 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:** 28 - **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:** 3 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/long-exposure-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.