ND Exposure Calculator

Turn a meter reading into a clear exposure plan before you open the shutter. Set your base shutter speed and ND strength. Match a target exposure time, compare combinations from your own filter bag, and adjust aperture and ISO when needed. See the result in seconds or a practical long-exposure time. Save your favorite shooting setups with notes. Use a preparation countdown and an exposure timer, with an optional completion notification. The timer restores its state when you return. If preparation was missed while the app was in the background, it asks you to restart rather than pretending a shot began. Built for Android phones and tablets, with light and dark appearance and 20 interface languages. All features are included in the app purchase. No subscriptions, account, ads or analytics. Your readings, filters and notes stay on your device unless you choose to share a summary. This is a planning tool. It does not control your camera or physically close its shutter. Keep the timer visible for short exposures. Android may delay background notifications. Verify your camera settings before shooting.

First Android release: exposure calculations, ND filter stacks, saved setups and an exposure timer.