Neutral Density Calculator vs ND+Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Neutral Density Calculator
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.
- ND filter stop input
- Base shutter speed input
- Calculated shutter speed output
- Countdown timer for long exposures
- Screen dimming during timer
- Sound notification for timer completion
- Supports up to 20-stop ND filters
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Neutral Density Calculator for photographers to calculate the shutter speed when adding neutral density filters to your lens. Set the filter you are using and the shutter speed without the filter and the app calculates the new shutter speed with your filter fitted. This is a utility app that helps you determine the correct exposure time/shutter speed when using Neutral Density Filters. Instantly it tells you exactly how long to leave your shutter open, and it even has a built-in timer countdown clock. Features: - User friendly UI - Includes a countdown timer if exposure time is more than 60 seconds (bulb) - Option to dim the screen while countdown - Option to enable disable sound once timer reach - Neutral density or Optical density unit selection - Supports up to 20-stops of ND filter - Base Shutter speed from 1/8000 - 60 sec - Show Fractional transmittance data with selected ND filter Steps: 1 - How many stops your ND filter is (like a 3-stop, 4-stop, 10-stop, etc.) 2 - Base shutter speed - What your current shutter speed is (before you put your ND filter on your lens) 3 - Final time are calculate base on your input, you can press the start button sync with DSLR/DSLM camera shutter at the same time. And the timer will remind you once timer reach to release your DSLR/DSLM camera shutter. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
ND+Timer
This app helps photographers determine correct exposure times for long exposure shots using ND filters. It includes a timer to capture the perfect moment and offers pro features through in-app purchases for enhanced functionality.
- Exposure time calculation with ND filters
- Integrated timer for capturing moments
- Notifications while device is locked
- Dark mode (Pro feature)
- Lock screen widget with running timer (Pro feature)
- Dynamic Island support (Pro feature)
- Automatic exposure computation for multiple filters (Pro feature)
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You are on a trip and would like to take a photo of a waterfall? Maybe You would like to take a long time exposure. ND+Timer gives you all the required capabilities to do filter photography. With ND+Timer you can always determine the correct exposure time for your photo. You can use the included timer feature to avoid missing the perfect moment. ND+Timer provides a lot of features: - Intuitive and clean app for photographers - Simple determination of exposure times with ND filters - Timer feature for taking photos - Notifications while device is locked ND+Timer is a freetime app project. To avoid annoying ads the app has some features available through in app purchases. Have understanding for this. Pro features (in app purchase): - Dark mode for the night - Widget with running timer on the lock screen - Support for the Dynamic Island - Hide unnecessary filters for clarity - Compute the exposure time automatically for multiple filters
Screenshots
Verdict
The clearest difference is price: ND+Timer at Free against Neutral Density Calculator's $1.99. ND+Timer also leads on update cadence (every 2 months vs every 48 months) and review sentiment (60% vs 50%). Neutral Density Calculator's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 15.6). On ads 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
ND+Timer is free to download; Neutral Density Calculator costs $1.99 up front. ND+Timer sells 1 one-off in-app purchase. Neutral Density Calculator asks for nothing beyond the download.
Neutral Density Calculator ships an update every 48 months, ND+Timer every 2 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.
| Parameter | Neutral Density Calculator | ND+Timer |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.4 (5 ratings) — better | — |
| Positive reviews | 50.0% of reviews | 60.0% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 48 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | Tobias Ullerich |
Customer experience
Neutral Density Calculator
ND+Timer
In-app purchases
Neutral Density Calculator
No in-app purchases
ND+Timer
- ND+Timer Pro$1.99
Questions
Is Neutral Density Calculator free?
Is ND+Timer free?
Do Neutral Density Calculator or ND+Timer have ads?
Which is updated more often, Neutral Density Calculator or ND+Timer?
Other comparisons
