Zone System

Davin Nguyen · Photo & Video

5.0 3 ratings $1.99
View on App Store ↗

Chart standing · US

Top Paid Photo & Video
#80
Best #80

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Aug 26, 2026
New version 2.5.3 → 2.6

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

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 100% 3
4★ 0% 0
3★ 0% 0
2★ 0% 0
1★ 0% 0

Screenshots

Keywords this app targets

Search terms AppTracker associates with this app — estimates, not search volume. ❝ = in the app's title; a highlighted number is its current position for that term.

Similar apps

Competitors and close alternatives, as estimated by AppTracker.

About

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.

What's new · 2.6

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

Details

DeveloperDavin Nguyen
ReleasedFeb 2025
UpdatedFeb 2026
Version2.6
Size12.5 MB
RequiresiOS 17 or later
Age rating4+
LanguagesEnglish
Price$1.99
Categories Photo & VideoUtilities
Bundle IDcom.davin.ZoneSystem