LEE Filters - Stopper Exposure is a specialized utility for calculating long-exposure times for LEE Stopper neutral density filters on iOS.
The App DNA
What makes this app unique?
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.
For Landscape and long-exposure photographers using LEE Stopper filter systems.
What does it look like?
Key features
Calculates adjusted shutter speeds for 6, 10, and 15-stop filters in 1/3 stop increments.
Countdown timer for exposures over 5 seconds with alarm and timestamp notifications.
Web-linked tool to identify compatible filter systems and adaptor rings.
How much does it cost?
The app is a free utility designed to support the sales of physical LEE filter hardware.
Velocity
Dormant developmentopaqueShow more...
Development has ceased, with no updates or feature releases in over 3,200 days. The app remains in a state of total stagnation, with the latest release dating back to October 2017. There is no evidence of ongoing maintenance or operational activity.
Who built it?
LEE Filters
3 apps tracked · Photo & Video
LEE Swatch Book - Official
LEE Diffusion ComparatorUser Sentiment
What do users think recently?
Recent user voice shows a thrilled sentiment. Users appreciate simple and intuitive design makes calculating exposure times for neutral density filters effortless for photographers and compatibility with various filter brands allows photographers to manage different stop counts without manual math.
How are ratings & reviews evolving?
What users say, by theme
- 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
- Lack of advanced film photography features like reciprocity failure compensation limits utility for non-digital shooters
6 of 6 recent reviews analyzed · limited sample · Thrilled overall
Read the full review analysisUnlock 1 user request, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for LEE Filters - Stopper Exposure
How's the Photo & Video market?
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.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for LEE Filters - Stopper Exposure
Where is it heading?
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.
The SWOT
- Direct integration with LEE Stopper hardware
- Adding film reciprocity profiles for non-digital shooters
Next best moves
Audit OS compatibility because the app has not been updated since 2017 → prevent total service failure
The counter-intuitive read
The app's lack of updates is a feature, not a bug…
Read the full takeSince the last report: 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.
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.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is LEE Filters - Stopper Exposure free to use?
Does this app work for film photography?
What is the difference between the Big, Little, and Super Stopper?
Sources
- [1] App Store, source
Report last updated