--- title: "Neutral Density Calculator — App Overview" url: https://marlvel.ai/apps/neutral-density-calculator category: Photo & Video developer: Nitrio platforms: ios rating: 3.5 (4 ratings) pricing: paid report_level: overview generated: 2026-05-07 last_verified: "2026-05-07T06:56:32.500Z" --- > **Key Insight:** This is a specialized utility app that automates long-exposure math and timing for photographers using ND filters. | Metric | Value | |--------|-------| | Category | Photo & Video | | Rating | 3.5 ★ (4) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 1.2 | | Developer | Nitrio | ## What is Neutral Density Calculator? Neutral Density Calculator is a utility tool designed for photographers to determine precise shutter speeds when using neutral density filters. It supports up to 20-stop calculations and includes an integrated countdown timer for long-exposure photography. ## Key Features - **Exposure Calculation**: Calculates required shutter speeds based on filter stops and base shutter speed settings ranging from 1/8000 to 60 seconds. - **Integrated Countdown Timer**: Provides a built-in timer for bulb exposures exceeding 60 seconds with optional screen dimming and audio alerts. - **Unit Flexibility**: Allows users to toggle between neutral density and optical density units while displaying fractional transmittance data. - **Broad Filter Support**: Supports a wide range of filter strengths up to 20-stops. ## Who is it for? Professional and amateur photographers who utilize neutral density filters for long-exposure photography. ## Links - [App Store](https://apps.apple.com/us/app/neutral-density-calculator/id1343590260?uo=4) - [Full Intelligence Report](https://marlvel.ai/apps/neutral-density-calculator) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/neutral-density-calculator).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*