# ND Filter Pro Calculator — ND Filter Exposure Calculator

> Calculates camera exposure times for ND filters with a countdown timer. (iPhone/iPad app by Randy McKown.)

- Source: https://appshunter.io/ios/app/nd-filter-pro-calculator/id6450627147 (this page in markdown: same URL + `.md`)
- Developer: [Randy McKown](https://appshunter.io/developer/1672114794)
- Category: Photo & Video
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.1 · 10 MB
- Languages: English
- Released: 2023-06-30
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/nd-filter-pro-calculator/id6450627147/reviews.md

## What is ND Filter Pro Calculator?

ND FilterPro helps you calculate the correct exposure time when using ND neutral density filters on your camera.

Step 1: Simply select the base shutter speed that would be used to capture a proper exposure when NOT using ND filters.
Step 2: Select the ND filters that you intend to attach to your camera lens.
Step 3: The correct exposure time is then calculated for you.
Step 4: For longer exposures, press the play button to start the countdown timer. You will be notified when the countdown is complete .. even while using another app.

PREMIUM FEATURES

ND Filter Bag Customization: Tell the app to only include the nd filters that you physically have in your camera bag.
Custom Exposure Notifications: Change both the audio and popup alerts that let you know when an exposure countdown has completed.
All ads are removed with a premium subscription.

## Key features

- Calculate exposure time with ND filters
- Select base shutter speed
- Select ND filters
- Countdown timer for long exposures
- Exposure completion notifications
- Customizable filter bag
- Customizable notifications

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Premium | $5.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/nd-filter-pro-calculator/id6450627147/reviews.md

### 1/5 — Disappointed

*2025-05-03*

This app gave me grossly incorrect exposure times for neutral density filters.  It cost me numerous lost shots.

## Frequently asked questions about ND Filter Pro Calculator

### How does ND Filter Pro calculate exposure times?

ND Filter Pro calculates exposure times by taking your base shutter speed (without filters) and the specific ND filters you select. It then provides the adjusted exposure time needed for a correct exposure with those filters.

### Does ND Filter Pro have ads?

Yes, ND Filter Pro contains advertisements. These ads can be removed by subscribing to the premium version of the app.

### What are the premium features of ND Filter Pro?

Premium features include ND Filter Bag Customization, allowing you to specify only the filters you own, and Custom Exposure Notifications for audio and popup alerts. All ads are also removed with a premium subscription.

### What is the cost of ND Filter Pro's premium subscription?

ND Filter Pro offers a premium subscription at $1.99 per month or $5.99 per year. This subscription unlocks all premium features and removes advertisements.

### What devices is ND Filter Pro compatible with?

ND Filter Pro is compatible with iPhones and iPads, as indicated by its supported devices list.

### How often is ND Filter Pro updated?

The latest version of ND Filter Pro is 2.0, and it was last updated on October 17, 2023. This suggests a relatively recent update frequency.

### What is the age rating for ND Filter Pro?

ND Filter Pro has an age rating of 4+, making it suitable for a wide range of users.

### Can ND Filter Pro notify me when an exposure is complete?

Yes, ND Filter Pro features a countdown timer for longer exposures. You will be notified when the countdown is complete, even if you are using another app.

## Version history (last 2 releases)

### 2.0 — 2023-10-17

CUSTOM FILTER BAG

Added the ability to manage your ND filters to match what's really in your camera bag. This allows you to add duplicate nd filters and stack them. You can also remove nd filters from the app that you do not physically own, making the interface much cleaner and easier to use. This feature requires a premium subscription.

CUSTOM NOTIFICATIONS

You now have the ability to customize the notification system for completed exposure countdowns by changing the audio alert and/or disabling the popup alert. This feature requires a premium subscription.

FORCE LIGHT / DARK MODE

Both free and premium users now have the ability to force light or dark mode for the app, regardless of your devices default settings.

### 1.0 — 2023-06-30

No release notes.

## Apps similar to ND Filter Pro Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Easy Long Exposure Camera](https://appshunter.io/ios/app/easy-long-exposure-camera/id1458648604) | 4.3 (919) | Free | Photo & Video |
| [Manual Camera, Pro DSLR \| RAW+](https://appshunter.io/ios/app/manual-camera-pro-dslr-raw-plus/id1152205153) | 4.4 (2,358) | Free | Photo & Video |
| [Manual Camera – Focus, ISO, WB](https://appshunter.io/ios/app/manual-camera-focus-iso-wb/id1543743256) | 4.3 (357) | Free | Photo & Video |

## More apps by Randy McKown

- [Dad Jokes : Funny Jokes App](https://appshunter.io/ios/app/dad-jokes-funny-jokes-app/id1672114792)

All apps by Randy McKown: https://appshunter.io/developer/1672114794

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*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 2026-06-10.*