Long Exposure Calculator vs ND Filter Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Long Exposure Calculator
Calculate precise exposure times for long-exposure photography with Neutral Density filters. Features a countdown timer for exposures over 10 seconds and supports up to 24 stops of ND filtration.
- ND filter exposure calculation
- Countdown timer
- Supports up to 24-stop ND filters
- Simple to use
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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.
ND Filter Calc
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.
- Neutral density filter calculation
- Exposure compensation
- Long exposure timer
- Countdown for shutter speeds > 3 seconds
- Simple interface
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A simple neutral density filter calculator for photographers. Has a count-down timer for shutter speeds of 3 seconds and above.
Screenshots
Verdict
The clearest difference is in-app purchases: ND Filter Calc at none against Long Exposure Calculator's 6. ND Filter Calc also leads on ads (none vs shown) and update cadence (every 6 days vs every 19 months). Long Exposure Calculator's advantage is iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Long Exposure Calculator sells 6 one-off in-app purchases. ND Filter Calc asks for nothing beyond the download.
Long Exposure Calculator ships an update every 19 months, ND Filter Calc every 6 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Long Exposure Calculator | ND Filter Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (64 ratings) — better | — |
| Positive reviews | 81.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 64 — better | — |
| Update frequency | Every 19 months | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 24 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Junel Corales | Jerry Watson |
Customer experience
Long Exposure Calculator
ND Filter Calc
Bugs and requests
Long Exposure Calculator
Reported bugs
5 issues- App freezes after each use
- App crashes after update
- App freezes and needs to be closed and reopened
- App runs no more after iOS update
- App crashes and cannot be opened again
Requested features
11 requests- Filter bag feature to select owned filters
- Ability to edit existing filters for precise values
- Combine multiple filters in calculations
- Option to display calculated time in seconds only
- Acoustic signal/alarm at the end of the timer
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- Tutorial for new users
- Translation to Spanish
- Include aperture in calculations
- Background operation for timer
- 10-second warning before timer ends
- Loud buzzer at the end of the timer
ND Filter Calc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Long Exposure Calculator
- Leave a Tip$1.99
- Leave a Tip$2.99
- Leave a Tip$3.99
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- Leave a Tip$5.99
- Leave a Tip$9.99
- Leave a tip$14.99
ND Filter Calc
No in-app purchases
Questions
Is Long Exposure Calculator free?
Is ND Filter Calc free?
Do Long Exposure Calculator or ND Filter Calc have ads?
Which is updated more often, Long Exposure Calculator or ND Filter Calc?
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