Comparison

ND+Timer vs SS Calculator for ND Filters

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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)
Features
Read full description

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

About

SS Calculator for ND Filters

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Calculate shutter speeds with ND filters โ€” quickly and accurately. This app is a simple calculation tool designed to instantly determine the correct shutter speed when shooting with ND filters. By selecting your normal shutter speed and the ND filter strength, the app automatically calculates the required shutter speed with the filter attached. Even when using multiple ND filters stacked together, it accurately accounts for the combined light reduction to provide the correct shutter speed. Complex calculations are no longer necessary for long exposures or slow-shutter shooting in daylight. The app can also reverse-calculate the original shutter speed from a shutter speed taken with an ND filter applied. This is useful not only for single ND filters, but also for checking stacked filter settings and reviewing exposure conditions when reshooting. Key features: - Automatically calculates shutter speed when using ND filters - Supports shutter speed calculation for stacked ND filters - Reverse calculation from ND-applied shutter speed to the original value - Timer feature that counts down the calculated shutter speed duration - Intuitive, clean, and distraction-free interface - Ideal for landscapes, waterscapes, and long-exposure photography Make ND filter photography more accurate and more comfortable. A practical, reliable shutter speed calculator you can depend on in the field.

Screenshots

ND+Timer4 screens
SS Calculator for ND Filters2 screens

Verdict

The call

The clearest difference is in-app purchases: SS Calculator for ND Filters at none against ND+Timer's 1. ND+Timer's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.2). On price, update cadence and ads there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. ND+Timer sells 1 one-off in-app purchase. SS Calculator for ND Filters asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

Scorecard3 real differences ยท 5 level
ND+Timer versus SS Calculator for ND Filters: the parameters behind the verdict, then further details
ParameterND+TimerSS Calculator for ND Filters
PriceFreeFree
Positive reviews60.0% of reviewsโ€”
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.6 โ€” better17.2
Further details โ€” not scored
Size9 MB0 MB
Age rating4+4+
DeveloperTobias UllerichYukihito Ono

In-app purchases

1 purchases

ND+Timer

One-time1
  • ND+Timer Pro$1.99
None

SS Calculator for ND Filters

No in-app purchases

Questions

Is ND+Timer free?
ND+Timer is free to download, with in-app purchases available.
Is SS Calculator for ND Filters free?
SS Calculator for ND Filters is free to download, with no in-app purchases.
Do ND+Timer or SS Calculator for ND Filters have ads?
Neither ND+Timer nor SS Calculator for ND Filters shows ads.
Which is updated more often, ND+Timer or SS Calculator for ND Filters?
ND+Timer ships an update every 2 months, and SS Calculator for ND Filters every 2 months. Most recently, ND+Timer was updated on November 3, 2026 and SS Calculator for ND Filters on October 28, 2026.

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