# Zone System vs ProFilm Meter

The clearest difference is price: Zone System at $1.99 against ProFilm Meter's $14.99. Zone System also leads on ratings volume (3 vs 1). ProFilm Meter's advantage is iOS requirement (15.1 vs 17). On rating, review sentiment, update cadence and ads there is nothing between them.

Zone System costs $1.99 and ProFilm Meter $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Zone System against 5.0 for ProFilm Meter. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Zone System ships an update every 9 days, ProFilm Meter weekly. The most recent releases landed on September 13, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Zone System | ProFilm Meter |
| --- | --- | --- |
| Price | **$1.99** | $14.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/zone-system/id6741873549/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/profilm-meter/id6761498714/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Paid | Paid |
| Best chart rank | #192 | **#88** |
| Size | 12 MB | 57 MB |
| Requires iOS | 17 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Davin Nguyen](https://appshunter.io/developer/1680398335) | [Scott Henderson](https://appshunter.io/developer/1889935226) |

## What reviewers say

### Zone System

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

**Currently charting:** #192 Top Paid · Photo & Video (US App Store)

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


### ProFilm Meter

[App page](https://appshunter.io/ios/app/profilm-meter/id6761498714)

**Currently charting:** #88 Top Paid · Photo & Video (US App Store)

This app acts as a comprehensive light meter and exposure toolkit for film photographers. It supports various film formats and calculates complex exposure adjustments like reciprocity failure and bellows compensation. Features include real-time metering, film stock libraries, and flash metering.

**Highlights:** Precision reflected-light meter, On-device film stock library, Reciprocity failure correction, Bellows compensation calculation, RA4 Color Reversal estimates, Flash metering and trigger, Lens-independent viewfinder zoom

**In-app purchases:** none


## Frequently asked questions

### Is Zone System free?

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

### Is ProFilm Meter free?

ProFilm Meter costs $14.99, with no in-app purchases.

### Which has better reviews, Zone System or ProFilm Meter?

Zone System and ProFilm Meter are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Zone System or ProFilm Meter have ads?

Neither Zone System nor ProFilm Meter shows ads.

### Which is updated more often, Zone System or ProFilm Meter?

Zone System ships an update every 9 days, and ProFilm Meter weekly. Most recently, Zone System was updated on September 13, 2026 and ProFilm Meter on September 15, 2026.

### Which is more popular, Zone System or ProFilm Meter?

Zone System currently peaks at #192 in the App Store charts, and ProFilm Meter at #88. Chart position reflects recent download velocity rather than total install base.

---

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