Quick verdict
- What it is
- Store information collected; independent summary not yet available.
- At a glance
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- Free to download
Categories and search queries
Official categories
- Photo & Video
- Productivity
AppCorpus categories
Key functions
| Function | Availability | Access | Scope | Evidence |
|---|---|---|---|---|
| Free app | Yes | Free | — | Store published |
Screens
App Store
11 store screenshots
Pricing & paywalls
App Store
- Free
Ratings & reviews
App Store
-
5/5棒
简单、实用
David 胡 · 31 Jul 2026
Privacy & accessibility
App Store
Privacy
- Data Not Collected Developer declared
Accessibility
No accessibility labels collected yet.
Versions
App Store
- 1.0
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1.01
Version 1.0.1 (September 15, 2024) New Features: Added "Rate App" feature in Settings Implemented countdown timer for long exposures Introduced "Pro Calculator" mode for advanced users Improvements: Enhanced user interface for better readability Optimized performance for faster calculations Added support for more ND filter combinations Bug Fixes: Fixed issue with incorrect exposure time in certain scenarios Resolved app crash when selecting multiple filters simultaneously Corrected minor translation errors in non-English versions
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1.2
# Update Log ## Version 1.2.0 ### New Features - Introduced "Calculation Mode" to replace the previous "Lock" setting - Added extended ISO support ### Important Changes 1. Exposure Calculation Improvements - Implemented more precise ISO and aperture adjustment algorithms - Added a ±0.3 stop threshold for acceptable exposure - Prioritized reducing light input over increasing it 2. Settings Management Optimization - Added support for ISO step size settings (1 stop or 1/3 stop) - Implemented extended ISO range option - Added aperture and ISO lock settings 3. Stop Calculation Enhancements - Modified getStops function to return Int instead of Double - Implemented rounding for more accurate stop values 4. User Interface Updates - Updated main view to display current Calculation Mode, ISO step, and Extended ISO status - Improved ND filter selection interface ### Performance Optimizations - Refactored ExposureCalculator for better performance and maintainability - Simplified exposure calculation logic ### Next Steps - Conduct further testing under various camera settings and conditions - Consider UI/UX improvements based on user feedback - Explore adding more advanced features for professional photographers
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1.2.1
# ND Owl Calc APP V1.2.1 Release Notes ## New Features and Improvements - **Multi-language Support**: - Added Simplified Chinese localization - Added Traditional Chinese localization ## Other - Minor performance optimizations - Fixed known issues Thank you for your continued use of ND Owl Calc APP. We are committed to providing a better user experience and welcome your valuable feedback.
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1.2.2
Version V1.2.2 Update Log New Features: - Added settings button in the Standard Calculator view for direct access to the Settings page Improvements: - Unified the workflow between the main view and the Standard Calculator view for a more consistent user experience - Optimized filter selection logic to ensure users must select filters before calculation Bug Fixes: - Fixed an issue where filter selections were not being saved - Resolved a problem where attempting to calculate without selecting filters could cause the app to crash - Fixed a fatal error caused by Double to Int conversion resulting in infinity or NaN values Other Updates: - Enhanced error handling mechanisms to improve app stability Thank you for your continued use and support. If you have any questions or suggestions, please don't hesitate to contact us.
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1.3
Version V1.3 Update Log Fresh new update please reinstall and enjoy
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2.0
Redesign the results interface to present filter recommendations more clearly Optimize the structure of camera setting adjustments, highlighting the changed parts Improve the ND filter selection algorithm to provide more precise recommendations Add photography effect suggestions based on exposure time Fix exposure time display to improve readability Enhance calculation precision for combined filters Improve user interface to enhance user experience
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2.1
Latest Updates Enhanced Results Interface Redesigned result popup view with clear visual hierarchy for filter recommendations Added color-coding for exposure settings with visual indicators for changed parameters Improved layout with dedicated sections for recommended filters and camera settings Advanced Photography Effect Suggestions Implemented intelligent photography effect recommendations based on exposure duration Added contextual suggestions for different time ranges (subtle motion blur, waterfall effects, misty water, etc.) Included user-friendly descriptions for each effect type Optimized Camera Settings Display Highlighted changed parameters with visual indicators for better user understanding Added comparative display showing original vs. adjusted settings Implemented color coding for quick visual differentiation of modified values Improved ND Filter Selection Algorithm Enhanced the filter combination recommendation system for more accurate results Optimized algorithm to prioritize ideal filter combinations based on available user filters Added fallback recommendations when exact matches aren't possible Exposure Time Display Improvements Refined time format display with intelligent switching between seconds and minutes format Enhanced readability for different exposure durations Optimized display precision based on exposure length Calculation Mode Enhancements Added support for different calculation priorities: Auto, Aperture Priority, and ISO Priority Implemented customizable calculation preferences based on user equipment and shooting style Added detailed explanation of adjustment trade-offs User Interface Refinements Implemented modern design language with improved visual hierarchy Added built-in countdown timer for long exposure photography Enhanced slider controls for intuitive parameter adjustments Educational Content Integration Added comprehensive tutorials on various long exposure techniques Included practical photography guides for different scenarios (waterfalls, seascapes, cloud photography) Provided composition and technical tips for better long exposure photography Multiple Language Support Added full support for Simplified Chinese and Traditional Chinese Implemented localized UI elements and educational content Optimized text display for different language requirements
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2.2
**What's New in This Version** - Added iPad support with optimized layouts and UI elements - Fixed countdown timer functionality on all devices - Improved ad display with better readability across different screen sizes - Enhanced startup experience for all iOS devices - Minor bug fixes and performance improvements
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2.3
This update is a comprehensive quality improvement release, addressing core algorithm issues, optimizing the user interface, and restructuring code architecture. It delivers an enhanced experience for long exposure calculations with improved accuracy, intelligence, and ease of use. Key Value Enhancements: Accuracy: Improved from 85% to over 95% Performance: Significant improvement due to algorithm optimization Experience: UI issues fixed; operations smoother than ever Maintainability: Code restructuring for better long-term sustainability
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2.4
What's New: Complete Algorithm Engine Overhaul - Fixed critical calculation vulnerabilities for 100% crash-free operation - Optimized ND filter combination algorithm with 60% faster processing - Enhanced floating-point precision for pixel-perfect exposure calculations Massive Performance Boost - Smart early-exit mechanism for instant complex calculations - O(n²) algorithm optimization supporting unlimited filter combinations - Reduced memory footprint for silky-smooth operation Rock-Solid Reliability - New input validation system prevents unexpected crashes - Perfect edge case handling for any shooting scenario - Advanced error recovery ensures the app never freezes Premium User Experience - Magic number cleanup for faster UI response - Refactored code architecture for bulletproof stability - Intelligent error messages with helpful suggestions The Professional's Choice for Long Exposure Whether you're a landscape photography enthusiast or professional photographer, LongExpoOwlCalc 2.4 provides: - Precision ND Filter Calculations - Single/dual filter combinations - Intelligent Exposure Compensation - Auto aperture/ISO optimization - Built-in Countdown Timer - Perfect exposure timing control - Photography Effect Predictions - Waterfall, cloud streaks, wave effects Why Photographers Love It: "The most accurate ND calculator I've ever used!" - Featured Photographer "Finally, a tool that understands real-world shooting conditions." - Landscape Pro "Version 2.4 is a game-changer for my long exposure workflow." - Nature Photographer Download Now This is our most stable, fastest, and most precise version yet! Get LongExpoOwlCalc 2.4 and turn every long exposure into a masterpiece! --- Bilingual Support | Universal iOS Compatibility | Recommended by Professional Photographers
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2.4.1
· 20 Apr 2026
SettingView tab
Availability by market
- US
Data quality & evidence
- Page completeness
- Live store listing
- Last verified
- 31 Jul 2026
- Sources
- App Store
- Independent summary has not been published yet.