This tool helps photographers calculate neutral density filter effects on their camera's exposure. It includes a countdown timer for long exposures, simplifying the process of achieving desired results.
ND Filter Calc by Jerry Watson



185+ iOS apps curated and reviewed
Whether you're new to apps for nd filter calculation or looking for an upgrade, our curated collection of 185+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.



This tool helps photographers calculate neutral density filter effects on their camera's exposure. It includes a countdown timer for long exposures, simplifying the process of achieving desired results.







This utility helps photographers determine precise exposure times when using ND filters. It also functions as a timer and trigger for compatible wireless remote controls.






This app helps photographers calculate necessary ND filter settings for long exposure shots. It also assists with depth of field and exposure value calculations.


Simulate the effects of real optical filters for black and white photography. This app accurately mimics the luminance modulation of red, yellow, green, blue, and orange filters. It also includes an automatic shutter speed calculator for ND filters and a pinhole photography simulator.




This app offers a comprehensive graphing and scientific calculator experience, mimicking the functionality of a Ti-84. It includes advanced features for graphing, symbolic calculations, equation solving, and extensive statistical analysis. Users can upgrade for full access to all capabilities.


This utility app assists photographers in determining the correct shutter speed when using neutral density filters. Input your filter's stops and base shutter speed to instantly get the adjusted exposure time, with an optional countdown timer for long exposures.


This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.


This advanced math application assists with a wide range of mathematical problems, from basic arithmetic to calculus, algebra, and statistics. It functions as a graphing calculator replacement, aids in homework, and supports complex calculations for academic and professional use.


This powerful scientific graphing calculator assists with calculations from school to professional work. It offers advanced scientific functions, 2D and 3D graphing capabilities, and a math solver for polynomials and systems of equations.


This official guide helps photographers calculate exposure adjustments when using ProGlass IRND filters. It features a built-in timer for long exposures and allows switching between different filter stops or ND values.


This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.


This app provides instant, step-by-step solutions for a wide range of math problems, from basic arithmetic to calculus. Users can scan math problems with their camera and receive detailed explanations, multiple solving methods, and graphing tools. It's designed to help students understand and solve challenging math questions quickly.


This app provides advanced scientific and graphing calculator functionality. It allows users to plot multiple functions, perform complex mathematical operations, analyze data with statistics, and manage matrices. An optional subscription unlocks even more features.


This utility helps landscape photographers determine the correct graduated neutral density filter for any scene. It uses your device's camera to measure dynamic range or allows manual input for filter density calculations.


This app provides a versatile suite of six calculators, including graphing, handwriting, and scientific functions. It simplifies complex mathematical tasks like solving equations and converting number bases, all within an elegant interface.


This app helps students solve math problems quickly and efficiently by snapping a picture. It provides step-by-step solutions and detailed explanations for a wide range of math topics, from fundamental arithmetic to calculus. It's designed to save time on homework and build confidence in math skills.