# Neutral Density Calculator — Neutral Density Calculator > Calculates shutter speed for neutral density filters with a built-in timer. (iPhone/iPad app by Nitrio.) - Source: https://appshunter.io/ios/app/neutral-density-calculator/id1343590260 (this page in markdown: same URL + `.md`) - Developer: [Nitrio](https://appshunter.io/developer/321121189) - Category: Photo & Video, Utilities - Price: $1.99 - Rating: 3.40/5 from 5 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 13 · 1 MB - Languages: American English - Released: 2018-02-07 - Data updated: 2026-09-04 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/neutral-density-calculator/id1343590260/reviews.md ## What is Neutral Density Calculator? Neutral Density Calculator for photographers to calculate the shutter speed when adding neutral density filters to your lens. Set the filter you are using and the shutter speed without the filter and the app calculates the new shutter speed with your filter fitted. This is a utility app that helps you determine the correct exposure time/shutter speed when using Neutral Density Filters. Instantly it tells you exactly how long to leave your shutter open, and it even has a built-in timer countdown clock. Features: - User friendly UI - Includes a countdown timer if exposure time is more than 60 seconds (bulb) - Option to dim the screen while countdown - Option to enable disable sound once timer reach - Neutral density or Optical density unit selection - Supports up to 20-stops of ND filter - Base Shutter speed from 1/8000 - 60 sec - Show Fractional transmittance data with selected ND filter Steps: 1 - How many stops your ND filter is (like a 3-stop, 4-stop, 10-stop, etc.) 2 - Base shutter speed - What your current shutter speed is (before you put your ND filter on your lens) 3 - Final time are calculate base on your input, you can press the start button sync with DSLR/DSLM camera shutter at the same time. And the timer will remind you once timer reach to release your DSLR/DSLM camera shutter. Thanks for your support and do visit nitrio.com for more apps for your iOS devices. ## Key features - ND filter stop input - Base shutter speed input - Calculated shutter speed output - Countdown timer for long exposures - Screen dimming during timer - Sound notification for timer completion - Supports up to 20-stop ND filters ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/neutral-density-calculator/id1343590260/reviews.md ### 5/5 — Super! *2025-03-09* Difficulty in finding such an app. Using 16 stop filter was difficult but a friend recommended it. Covers all ND filters. Ideal! ### 1/5 — Terrible App *2018-12-21* It doesn’t allow you to set ISO or aperture. Totally useless. ## Frequently asked questions about Neutral Density Calculator ### What is the Neutral Density Calculator app? The Neutral Density Calculator is a utility app for photographers. It helps you calculate the correct shutter speed when using neutral density (ND) filters on your camera lens, ensuring proper exposure. ### How does the Neutral Density Calculator work? You input the number of stops of your ND filter and your base shutter speed (without the filter). The app then instantly calculates the new shutter speed required with the filter attached. ### Does the Neutral Density Calculator have a timer? Yes, it includes a built-in countdown timer that is particularly useful for exposures longer than 60 seconds (bulb mode). You can also choose to dim the screen and enable/disable sound notifications for when the timer reaches zero. ### What is the price of the Neutral Density Calculator? The Neutral Density Calculator is a paid app, priced at $1.99. This one-time purchase grants you access to all its features. ### What devices is the Neutral Density Calculator compatible with? The app is designed for iOS devices, including the iPhone, iPad, and iPod. It requires iOS 4+ and is optimized for various screen sizes. ### How often is the Neutral Density Calculator updated? The app was last updated on December 22, 2025, indicating ongoing support and potential for future improvements. The current version is 1.2. ### What is the age rating for the Neutral Density Calculator? The Neutral Density Calculator has an age rating of 4+, making it suitable for users of all ages. It contains no mature content. ### Does the Neutral Density Calculator have ads? No, the Neutral Density Calculator does not contain advertisements. It is a paid application that offers an ad-free experience. ## Version history (last 3 releases) ### 1.2 — 2025-12-22 - Updated for the newest devices. - Minor bugs fixed. ### 1.1 — 2021-04-05 - Update for Newest Devices - Bug Fixed ### 1.0 — 2018-02-07 No release notes. ## Apps similar to Neutral Density Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [MyGIF - GIF from Video!](https://appshunter.io/ios/app/mygif-gif-from-video/id912434220) | 4.4 (7) | Free | Photo & Video | | [Video Rotation: Flip and rotate videos](https://appshunter.io/ios/app/video-rotation-flip-and-rotate-videos/id904379060) | 3.5 (10) | $0.99 | Photo & Video | | [Light Magick](https://appshunter.io/ios/app/light-magick/id827111620) | 1.0 (1) | Free | Photo & Video | | [Denoise: AI Noise Remover](https://appshunter.io/ios/app/denoise-ai-noise-remover/id946423200) | 4.7 (18) | Free | Photo & Video | | [WooGIF-GIF & Live Wallpaper](https://appshunter.io/ios/app/woogif-gif-and-live-wallpaper/id1224091880) | 3.7 (3) | Free | Photo & Video | | [Drawing -All in One Photo Effects Crazy Cool Image Application with Emojis & Emoticons](https://appshunter.io/ios/app/drawing-all-in-one-photo-effects-crazy-cool-image-application-with-emojis-and-emoticons/id863120720) | — | $0.99 | Photo & Video | ## More apps by Nitrio - [Coloring Book - Plus](https://appshunter.io/ios/app/coloring-book-plus/id500418548) - [Resistor Plus](https://appshunter.io/ios/app/resistor-plus/id500615686) - [Premium Clock Plus](https://appshunter.io/ios/app/premium-clock-plus/id502784721) - [Gold Luxury Clock](https://appshunter.io/ios/app/gold-luxury-clock/id505043266) - [Ohm Law Calculator](https://appshunter.io/ios/app/ohm-law-calculator/id505900137) - [Premium Clock](https://appshunter.io/ios/app/premium-clock/id517487778) All apps by Nitrio: https://appshunter.io/developer/321121189 ## Related topics [neutral density calculator](https://appshunter.io/ios/topics/neutral-density-calculator) · [ss calculator for nd filters](https://appshunter.io/ios/topics/ss-calculator-for-nd-filters) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*