250+ iOS apps curated and reviewed
Out of 250+ neutral density calculator apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $1.99 | 3.5★ (4) | No | No | Aug 2026 |
| 2 |  | Free | — | No | No | May 2026 |
| 3 |  | Free | 4.4★ (5) | No | No | May 2026 |
| 4 |  | Free | 5.0★ (1) | No | Yes | May 2026 |
| 5 |  | $5.99 | 4.7★ (6.3K) | No | Yes | Aug 2026 |
| 6 |  | Free | — | — | No | May 2026 |
| 7 |  | Free | 4.5★ (50K) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.3★ (332) | No | No | Aug 2026 |
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 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 transforms your device into a 3D freight dimensioner, allowing you to quickly measure dimensions, calculate density, and determine freight class. It eliminates the need for manual measuring tools and expensive scanning equipment, providing fast, accurate, and cost-effective logistics solutions.
This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.
This app offers a free, powerful alternative to hardware graphing calculators. It supports basic to complex math, including graphing, statistics, and matrix operations, with a built-in user manual for assistance.
This app offers a powerful scientific calculator with a wide range of functions for trigonometry, statistics, and combinatorics. Users can define and evaluate their own functions, assign values to variables, and view multiple expressions simultaneously. It works offline and is completely free to use.
This app calculates and plots normal and Gaussian distribution functions, including cumulative density functions for probabilities. It also functions as a scientific calculator with support for common mathematical and trigonometric functions, and allows direct text input of expressions.
This app serves as a comprehensive resource for the ammonia industry. It offers tools for testing solenoid coils, performing various industry calculations, and accessing essential information like valve positions, charts, and formulas.
This app simplifies complex calculations for ultrafast and nonlinear laser optics. It handles frequency generation, optical parametric processes, and spectroscopic conversions. It also calculates pulse characteristics and power conversions for laser systems.
