182+ iOS apps curated and reviewed
Out of 182+ zone system apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (3) | No | Yes | Oct 2026 | |
| 2 |  | $1.99 | 5.0★ (3) | No | No | Oct 2026 | |
| 3 |  | Free | — | No | Yes | Oct 2026 | |
| 4 |  | $2.99 | 2.8★ (5) | No | No | Oct 2026 | |
| 5 |  | $0.99 | 2.8★ (6) | No | No | Oct 2026 | |
| 6 |  | Free | — | No | No | Oct 2026 | |
| 7 |  | Free | 4.3★ (3) | No | No | Oct 2026 | |
| 8 |  | Free | — | No | No | May 2026 |
This app assists photographers in precisely calculating exposure and tonal placement using Ansel Adams' Zone System. It offers features for metering, reciprocity correction, and development adjustments, with options for multi-point measurements and data export.
This tool simplifies Ansel Adams' exposure and development method for photographers. It helps measure shadows and highlights, calculate aperture and development times, and preview results with film stock presets.
