--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "LEE Filters - Stopper Exposure" developer_entity: "LEE Filters" bundle_id: "com.leefilters.stopper" app_store_id: "1105022698" category: "Photo & Video" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2017-10-30" report_date: "2026-08-19" last_verified: "2026-08-19T00:00:00.000Z" report_version: "1.4.2" total_reviews: 14 overall_rating: 4.5 sentiment: "Thrilled" sentiment_score: 85 confidence: "medium" confidence_score: 0.6 top_praise_theme: "Simple and intuitive design makes calculating exposure times for neutral density filters effortless for photographers" top_complaint_theme: "Lack of advanced film photography features like reciprocity failure compensation limits utility for non-digital shooters" review_sample_size: 6 total_review_count: 6 analyzed_review_count: 6 data_age_days: 15 momentum_velocity: "zombie" intelligence_version: 3 tags: ["photo & video", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "landscape", "long-exposure", "photographers"] canonical_url: "https://marlvel.ai/apps/lee-filters-stopper-exposure" license: "CC-BY-NC 4.0" content_version: "v2" --- # LEE Filters - Stopper Exposure Intelligence Report ## TL;DR {#tldr} - **Category**: Photo & Video · Free - **Signal**: Rating 4.5 · Sentiment Thrilled - **Recent focus**: Lack of advanced film photography features like reciprocity failure compensation limits utility for non-digital shooters (top complaint) · Simple and intuitive design makes calculating exposure times for neutral density filters effortless for photographers (top praise) > **TL;DR:** LEE Filters - Stopper Exposure is a photo & video app by LEE Filters, rated 4.5/5 by 14 users, with Thrilled user sentiment (85/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** LEE Filters - Stopper Exposure maintains Thrilled user sentiment (4.5/5 from 14 reviews), with users consistently praising simple and intuitive design makes calculating exposure times for neutral density filters effortless for photographers. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.5/5 (14 reviews) | | **User Mood** | Thrilled | | **Category** | Photo & Video | | **Developer** | LEE Filters | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Medium (0.6/1.0) | | **Data Age** | 15d | ## Metadata & Market Performance - **Publisher:** LEE Filters - **Category:** Photo & Video - **Target Audience:** Landscape and long-exposure photographers using LEE Stopper filter systems. - **Platforms:** iOS - **Version Reviewed:** 1.4.2 - **Report Date:** 2026-08-19 - **Signal Count:** 6 reviews analyzed - **Confidence:** Medium (0.6/1.0) - **App Store ID (iOS):** 1105022698 - **Bundle ID:** com.leefilters.stopper - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-19 ## Executive Snapshot **What it is:** LEE Filters - Stopper Exposure is a specialized utility for calculating long-exposure times for LEE Stopper neutral density filters on iOS. **Why users hire it:** The app removes the cognitive friction of manual stop-reduction math for landscape photographers, serving as a brand-loyalty tool for LEE Filters hardware users. ## App DNA (Features & Intent) - **[Differentiator] Stopper Exposure Calculator:** Calculates adjusted shutter speeds for 6, 10, and 15-stop filters in 1/3 stop increments. * *User Intent:* Users want to quickly find relevant content or features. - **[Standard] Long Exposure Timer:** Countdown timer for exposures over 5 seconds with alarm and timestamp notifications. * *User Intent:* Users want timely prompts to stay engaged without missing updates. - **[Differentiator] System Match Tool:** Web-linked tool to identify compatible filter systems and adaptor rings. * *User Intent:* Users want to quickly find relevant content or features. ## Market Position {#market-position} LEE Filters - Stopper Exposure holds a 4.5-star rating across 14 reviews, functioning as a niche brand-support utility rather than a general-market photo tool. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is a free utility designed to support the sales of physical LEE filter hardware. ## 🟢 User Sentiment (Medium Confidence: 6 of 6 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.5/5 - **Platform Split:** iOS 4.5/5 (14 ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **Simple and intuitive design makes calculating exposure times for neutral density filters effortless for photographers** - **Compatibility with various filter brands allows photographers to manage different stop counts without manual math** ### Top Complaints (Impact Areas) - **Lack of advanced film photography features like reciprocity failure compensation limits utility for non-digital shooters** ## SWOT Analysis {#swot} **Core Strengths:** - Direct integration with LEE Stopper hardware **Growth Levers:** - Adding film reciprocity profiles for non-digital shooters ## Recent Changes (v2 → v3) {#recent-changes} The app's competitive outlook shifted from a focus on feature-based growth to a defensive posture regarding OS compatibility. The eight-year development silence is now categorized as a critical risk to service continuity rather than a simple maintenance-mode status. **Overall trend**: Stable **Compared at**: 2026-08-19 ### High-impact changes - **[Shifted] Threat Profile Update** (swot) - **[Shifted] Outlook Focus** (positioning) ### Medium-impact changes - **[Added] Hardware Model Clarification** (features) ## What's New - **Latest (v1.4.2, 8 years ago):** Maintenance update containing minor bug fixes and general stability improvements. ## App Momentum (Zombie) {#momentum} - No updates since October 2017. - Maintenance-mode status for 8 years. > **Cadence:** 1 total versions · 0 majors in last 6 months · 3214 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} LEE Filters - Stopper Exposure is a market-leading photo & video app that is completely free. With a 4.5/5 rating from 14 reviews, it delivers strong user satisfaction. > **Bottom Line:** LEE Filters - Stopper Exposure maintains brand loyalty for hardware owners, but the 8-year development gap makes it vulnerable to OS-level deprecation. Prioritizing a stability audit would protect the existing user base from sudden service loss. **Best for:** Landscape and long-exposure photographers using LEE Stopper filter systems. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit OS compatibility because the app has not been updated since 2017 → prevent total service failure ### Outlook: Stable The long-exposure photography market is consolidating around digital-first workflows, leaving LEE Filters - Stopper Exposure in a stable but stagnant position. The so-what for the PM is that the app serves as a brand-support asset that requires minimal maintenance, but it risks losing relevance if it fails to address the film-photography segment. - ⚪ The app remains a functional, niche utility for a specific hardware ecosystem, though the lack of updates since 2017 creates a long-term compatibility risk. - 🔴 The absence of film-specific features leaves a segment of the long-exposure market turning to alternative calculators, limiting the app's reach. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.5/5 | | Total Reviews | 14 | | Sentiment | Thrilled (85/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **LEE Filters - Stopper Exposure** (this app) | 4.5/5 | Thrilled | LEE Filters | | [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 | | [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 | ## Company Profile - **Developer:** LEE Filters - **Website:** [https://www.leefilters.com/index.php/camera/bigstopper](https://www.leefilters.com/index.php/camera/bigstopper) - **Social:** [Instagram](https://www.instagram.com/leefilters) · [Facebook](https://www.facebook.com/LeeFilters) · [X/Twitter](https://twitter.com/LEEFilters) · [YouTube](https://www.youtube.com/leefilterstv) · [LinkedIn](https://www.linkedin.com/company/leefilters) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/lee-filters-stopper-exposure/id1105022698?uo=4) - **Dev Site:** [Official Website](https://www.leefilters.com/index.php/camera/bigstopper) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*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: 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 ## Frequently Asked Questions {#faq} ### Is LEE Filters - Stopper Exposure free to use? Yes, the app is a free utility provided by LEE Filters to support their range of Stopper long-exposure camera filters. ### Does this app work for film photography? The app is primarily designed for digital photography. Users report it lacks reciprocity failure compensation, which is necessary for film-based long exposures. ### What is the difference between the Big, Little, and Super Stopper? These represent different light-reduction levels: the Little Stopper is 6 stops, the Big Stopper is 10 stops, and the Super Stopper is 15 stops. ## 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:** 6 - **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:** 15 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/lee-filters-stopper-exposure) Data licensed for AI Agent attribution under CC-BY-NC 4.0.