# Zone System

> Exposure & development tool

Canonical page: [https://chrome-stats.com/d/id6741873549](https://chrome-stats.com/d/id6741873549)

## Overview

- **ID:** `id6741873549`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Davin Nguyen
- **Category:** Photo & Video
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 2.6
- **Last updated:** 2026-08-19
- **First published:** 2025-02-12
- **Size:** 12 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/zone-system/id6741873549)
- **Website:** [https://www.davinese.com/zonesystem](https://www.davinese.com/zonesystem)
- **Privacy policy:** [https://www.davinese.com/privacy](https://www.davinese.com/privacy)

## Description

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.

## Rankings

- #556,128 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6741873549)