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Zone System

App Store★ 5.01.99 USDFirst seen 11 Nov 2026

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App info

Category: Photo & Video
Age rating: 4+
Price: 1.99 USD
Version: 2.6
Released: Feb 12, 2025
Last updated: 20 Aug 2026
Size: 12.1 MB
Requires: iOS 17 or later
Languages: 1

5.03 ratings

★★★★★

Average rating on the App Store. Apple doesn't publish how many ratings each star has.

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What's newin version 2.6

New zone styles. Choose Solid or Swatch to make zones easier to read visually.

About this app

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Zone System is a practical tool for applying Ansel Adams’ exposure and development method. • Measure shadows and highlights to set exposure • Get aperture and development (N, N+, N–) calculations • Preview results with film stock presets • Get calculations for aperture, shutter speed, ISO, and EV This app makes the Zone System simpler, faster, and more reliable.

Developer website