# LFTools vs Zone System

The clearest difference is price: LFTools at Free against Zone System's $1.99. Zone System's advantage is update cadence (every 9 days vs every 3 months) and device support (4 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

LFTools is free to download; Zone System costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LFTools ships an update every 3 months, Zone System every 9 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LFTools | Zone System |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/zone-system/id6741873549/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | — | Paid |
| Size | 4 MB | 12 MB |
| Requires iOS | 18 | **17** |
| Devices | iPhone | **iPhone, iPad, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Ruediger Merz](https://appshunter.io/developer/1653209743) | [Davin Nguyen](https://appshunter.io/developer/1680398335) |

## What reviewers say

### LFTools

[App page](https://appshunter.io/ios/app/lftools/id6479173686)

**In-app purchases:** none


### Zone System

[App page](https://appshunter.io/ios/app/zone-system/id6741873549)

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.

**Highlights:** Measure shadows and highlights, Aperture and development calculations, Preview results with film presets, ISO and EV calculations, Simplified Zone System application

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is LFTools free?

LFTools is free to download, with no in-app purchases.

### Is Zone System free?

Zone System costs $1.99, with no in-app purchases.

### Do LFTools or Zone System have ads?

Neither LFTools nor Zone System shows ads.

### Which is updated more often, LFTools or Zone System?

LFTools ships an update every 3 months, and Zone System every 9 days. Most recently, LFTools was updated on October 27, 2026 and Zone System on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*