# Long Exposure Calculator

> Utility for calculating long exposure times with ND filters. (iPhone/iPad app by Junel Corales.)

- Source: https://appshunter.io/ios/app/long-exposure-calculator/id694553269 (this page in markdown: same URL + `.md`)
- Developer: [Junel Corales](https://appshunter.io/developer/694553272)
- Category: Photo & Video, Utilities
- Price: Free with in-app purchases
- Rating: 4.40/5 from 62 App Store ratings · 71 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 24 MB
- Languages: American English
- Released: 2013-09-03
- Data updated: 2026-07-11
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/long-exposure-calculator/id694553269/reviews.md

## What is Long Exposure Calculator?

Long Exposure Calculator is a utility that helps you determine the correct exposure time/shutter speed when using Neutral Density filters.

Features:
- Very simple to use
- Includes a countdown timer if the exposure time is 10 seconds or longer.
- Supports up to 24-stops of ND filter

iPhone, iPad, and iPod touch compatible.

## Key features

- ND filter exposure calculation
- Countdown timer
- Supports up to 24-stop ND filters
- Simple to use

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Leave a Tip | $2.99 | one-time |
| Leave a Tip | $1.99 | one-time |
| Leave a Tip | $3.99 | one-time |
| Leave a Tip | $5.99 | one-time |
| Leave a Tip | $9.99 | one-time |
| Leave a tip | $14.99 | one-time |


## Recent user reviews (10 of 71)

All indexed reviews: https://appshunter.io/ios/app/long-exposure-calculator/id694553269/reviews.md

### 5/5 — Great App, but it can be much better

*2024-08-17, version 3.2.0*

Great app, for which I was happy to make a donation.
But if I can express a few wishes/suggestions for improvement: It would be great if you could put together a "filter bag". So the filter selection only includes filters that you have in your bag. That makes setting up easier.
And another wish: To be able to edit my existing filters. For example, my ND 3.0 filter does not have the exact value.
It would be good if you could set the filters precisely.
Finally, combine 2 filters, then it will be an unbeatably good app.

### 5/5 — Very good app

*2023-01-16, version 3.1.0*

It works perfectly and has a very simple and intuitive interface. I would like to ask the developers to add an option to display the calculated time in seconds only. The new A7R5 has a built-in timer that accepts seconds only. It would must quicker to have the total time displayed in seconds so I do not have to convert minutes to seconds and then add the remaining seconds.

### 5/5 — Simple yet smart

*2022-09-15, version 3.1.0*

Does what it says in a straightforward manner. Recommended.

### 5/5 — Wunderbar und ohne Fehler

*2022-06-12, version 3.1.0*

Ich habe die App nun seit über einem Jahr im Einsatz und alle Berechnungen stimmten bisher. Die Aufnahmezeiten betragen dabei bis zu 45 Minuten.

Die App ist einfach (positiv) aufgebaut und stellt alle wichtigen Funktionen zu Verfügung. 
Somit eine kostenfreie App die alle Parameter für die Langzeitfotografie schnell bereit stellt. 

Wen die unten eingeblendete Werbung stört, der darf gerne mit einem überschaubaren Betrag den Programmierer finanzieren. Was ich nicht verstehe ist, dass man sich darüber beschwert, dass die Werbung so angebracht ist, dass man darauf tippen kann. Das ist Sinn und Zweck ;-). Und ehrlich, wer Langzeitfotografie als sein Hobby sieht und dann das Geld nicht mehr für diese App übrig hat, sollte über seine finanzielle Gesamtsituation nachdenken.

### 5/5 — Perfect!

*2022-05-14, version 3.1.0*

Everything I need, nothing I don’t. Demystifies a lot of the ND process and makes it very easy. Happy to pay the $3.99 to get it ad free. Thank you!

### 5/5 — My go to calculator

*2022-02-06*

I have for many years now used Nisi filters as well as Lee and a few others. Lee and Nisi have their own apps but this is my go to app for calculating out the times. Simple and easy to use, just what you need when the light is changing fast. The functionality of this app is better than any others I have tried. Keep up the good work 😊

### 5/5 — Simple and Convenient

*2022-01-30, version 3.1.0*

Nothing extra, quick and easy to use.

### 1/5 — Gleich Werbung

*2021-11-20, version 3.1.0*

App installiert, gestartet und gleich erscheint eine Werbung mit Installtionsbutton in der Nähe des Homebutton vom Handy, wodurch ein versehentliches betätigen des Installationsbuttons der Werbung vorprogrammiert ist. Ich habe die App direkt wieder gelöscht…

### 5/5 — Tutorial

*2021-10-09, version 3.1.0*

Can’t figure it out, is there a tutorial?

### 2/5 — App ist gut. Werbung mit Installations Buttom schlecht

*2021-09-30, version 3.1.0*

Es ist mir klar, dass man für eine kostenlose App Werbung in Kauf nehmen muss. Ein No Go ist aber, dass diese Werbungen einen Installations Button für Software haben und dieser Button so platziert ist, dass man diesen ungewollt drücken kann.

## Frequently asked questions about Long Exposure Calculator

### What does the Long Exposure Calculator app do?

This app is a utility designed to help photographers determine the correct exposure time or shutter speed when using Neutral Density (ND) filters. It simplifies the process of calculating adjustments needed for long-exposure photography.

### What are the key features of this app?

The app is very simple to use and includes a countdown timer for exposures of 10 seconds or longer. It also supports a wide range of ND filters, up to 24 stops.

### Is this app free to use?

The application is free to download and use, but it does contain in-app purchases and advertisements.

### What devices is the Long Exposure Calculator compatible with?

The app is compatible with iPhone, iPad, and iPod touch devices, making it accessible to a broad range of Apple users.

### When would I use this app?

You would use this app when you are shooting long-exposure photographs and need to accurately calculate the correct shutter speed or exposure time, especially when using Neutral Density filters to reduce the amount of light entering the camera.

## Version history (last 5 releases)

### 3.2.0 — 2023-09-28

Thanks for using the Long Exposure Calculator app!

Here's what's new in this update:
- Bug fixes and improvements.

### 3.1.0 — 2021-01-07

Thanks for using the Long Exposure Calculator app!

Here's what's new in this update:
- Now supports up to 24-stops of ND filter.
- Bug fixes and improvements.

### 3.0.0 — 2020-08-27

Thanks for using Long Exposure Calculator! Here's what's new in this update: 
- Redesigned and simplified UI
- Alarm option at the end of the timer
- iOS dark mode support

### 2.0 — 2014-01-05

- iOS 7 support
- Improved user interface
- Added Settings and Help
- New Feature: Choose between 2 color schemes
- New Feature: ND Filter Notation option (ND1024 or ND 3.0)
- New Feature: Choose shutter speed steps from 1/3, 1/2, and 1 EV

### 1.0 — 2013-09-03

No release notes.

## Apps similar to Long Exposure Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ManualExposure](https://appshunter.io/ios/app/manualexposure/id697932594) | 4.1 (12) | Free | Photo & Video |
| [SetMyCamera](https://appshunter.io/ios/app/setmycamera/id670363905) | 4.4 (138) | Free | Photo & Video |
| [PhotoPills](https://appshunter.io/ios/app/photopills/id596026805) | 4.7 (1,490) | $10.99 | Photo & Video |
| [The Photographer's Ephemeris](https://appshunter.io/ios/app/the-photographers-ephemeris/id366195670) | 4.7 (1,530) | $9.99 | Photo & Video |
| [ReeXpose - RAW Long Exposure](https://appshunter.io/ios/app/reexpose-raw-long-exposure/id1624485209) | 4.3 (455) | Free | Photo & Video |
| [ND Filter Calc](https://appshunter.io/ios/app/nd-filter-calc/id6449380764) | — | Free | Photo & Video |

## More apps by Junel Corales

- [US Civics Prep Flashcards](https://appshunter.io/ios/app/us-civics-prep-flashcards/id1480081832)

All apps by Junel Corales: https://appshunter.io/developer/694553272

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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 2026-07-11.*