# Zone System — Exposure & development tool

> Photography tool for Ansel Adams' exposure and development method. (iPhone/iPad app by Davin Nguyen.)

- Source: https://appshunter.io/ios/app/zone-system/id6741873549 (this page in markdown: same URL + `.md`)
- Developer: [Davin Nguyen](https://appshunter.io/developer/1680398335)
- Category: Photo & Video, Utilities
- Price: $1.99 (on sale, was $2.99)
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17 · 12 MB
- Languages: American English
- Released: 2025-02-12
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/zone-system/id6741873549/reviews.md

## What is Zone System?

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.

## Key features

- Measure shadows and highlights
- Aperture and development calculations
- Preview results with film presets
- ISO and EV calculations
- Simplified Zone System application

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/zone-system/id6741873549/reviews.md

### 5/5 — 10/10

*2025-02-26*

it’s awesomesauce!!!!

## Frequently asked questions about Zone System

### What is the Zone System app?

Zone System is a practical tool designed to help photographers apply Ansel Adams' renowned exposure and development method. It provides calculations for aperture, shutter speed, ISO, and EV, making the process more efficient.

### How does Zone System help with exposure?

The app allows you to measure shadows and highlights in your scene to accurately set your exposure. It then provides the necessary calculations for aperture and development (N, N+, N–) to achieve your desired results.

### Can I preview my photos with Zone System?

Yes, Zone System offers a preview feature that allows you to see potential results using various film stock presets. This helps you visualize the outcome before you even take the shot.

### What devices is Zone System compatible with?

Zone System is available on iPhone, iPad, Apple Watch, and Apple Vision Pro, offering flexibility for photographers on the go or in the studio.

### How much does Zone System cost?

Zone System is a paid application, available for a one-time purchase of $1.99. There are no in-app purchases or subscriptions required.

### Is Zone System suitable for beginners?

While the Zone System itself can be complex, this app is designed to make it simpler, faster, and more reliable. Its clear calculations and preview features can assist both experienced photographers and those new to the method.

### How often is Zone System updated?

The latest version, 2.5.3, was released on February 5, 2026. The app is actively maintained by developer Davin Nguyen.

### What is the age rating for Zone System?

Zone System has an age rating of 4+, indicating it is suitable for users of all ages. The app's content is not considered mature or inappropriate.

## Version history (last 5 releases)

### 2.6 — 2026-08-19

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

### 2.5.3 — 2026-02-05

Performance improvements

### 2.5.2 — 2025-09-28

• Added shutter speed, ISO, and EV calculations
• Added Share Feedback option to report errors and to request features

### 2.5.1 — 2025-09-17

• Bug fixes

### 2.5 — 2025-09-08

• Added shutter speed, ISO, and EV calculations

## Apps similar to Zone System

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Art of Foto](https://appshunter.io/ios/app/art-of-foto/id1440728210) | 4.8 (16) | Free | Photo & Video |
| [Zone Tool](https://appshunter.io/ios/app/zone-tool/id1489637620) | 2.8 (6) | $0.99 | Photo & Video |
| [GrayZone - Light Meter](https://appshunter.io/ios/app/grayzone-light-meter/id6757147623) | 2.3 (3) | $2.99 | Photo & Video |
| [ProFilm Meter](https://appshunter.io/ios/app/profilm-meter/id6761498714) | — | $14.99 | Photo & Video |
| [Reciprocity Plus](https://appshunter.io/ios/app/reciprocity-plus/id898649178) | 4.3 (6) | $1.99 | Photo & Video |
| [Second View - viewfinder](https://appshunter.io/ios/app/second-view-viewfinder/id6761623499) | 4.0 (5) | Free | Photo & Video |

## More apps by Davin Nguyen

- [Momentum Stories](https://appshunter.io/ios/app/momentum-stories/id6447318278)
- [Lighting Ratio](https://appshunter.io/ios/app/lighting-ratio/id6741826632)
- [Therapy Notepad](https://appshunter.io/ios/app/therapy-notepad/id6744342891)
- [Daily Detox](https://appshunter.io/ios/app/daily-detox/id6744467532)
- [Production Safety](https://appshunter.io/ios/app/production-safety/id6745492731)

All apps by Davin Nguyen: https://appshunter.io/developer/1680398335

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*