# Lghtmtr vs Zone Tool

The clearest difference is price: Lghtmtr at Free against Zone Tool's $0.99. Lghtmtr also leads on rating (4.5 vs 2.8) and update cadence (every 4 months vs every 38 months). Zone Tool's advantage is in-app purchases (none vs 1) and review sentiment (100% vs 80%). On ads and device support there is nothing between them.

Lghtmtr is free to download; Zone Tool costs $0.99 up front. Lghtmtr sells 1 one-off in-app purchase. Zone Tool asks for nothing beyond the download.

Lghtmtr holds the better App Store score, 4.5 against 2.8. That said, the two scores are not equally well evidenced: Lghtmtr has 129 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 80% of Lghtmtr's written reviews are positive against 100% of Zone Tool's, so the app with the better star average is not the one people write more warmly about.

Lghtmtr ships an update every 4 months, Zone Tool every 38 months. The most recent releases landed on October 14, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Lghtmtr | Zone Tool |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.5 (129 ratings)](https://appshunter.io/ios/app/lghtmtr/id956251190/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/zone-tool/id1489637620/reviews) |
| Number of ratings | **129** | 6 |
| Positive reviews | 79.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 38 months |
| Monetization | **Free** | Paid |
| Size | 25 MB | 0 MB |
| Requires iOS | 17.5 | **12.2** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Jacque](https://appshunter.io/developer/1164318048) | [Jouni Erola](https://appshunter.io/developer/295758397) |

## What reviewers say

### Lghtmtr

[App page](https://appshunter.io/ios/app/lghtmtr/id956251190)

This app provides a minimalist light meter to help users determine ideal exposure settings for photography. It visually demonstrates the relationship between ISO, aperture, and shutter speed, making it intuitive for learning photographers.

**Highlights:** Minimalist light meter, Intuitive exposure settings, Visual feedback, Adjustable ISO, aperture, shutter speed, Camera profile customization, Scene reference with readings

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee tip | $4.99 | one-time |


### Zone Tool

[App page](https://appshunter.io/ios/app/zone-tool/id1489637620)

Calculate photographic exposure and development adjustments using zone system theory. Measure shadows and highlights, input film ISO and desired shutter speed to determine aperture and development time modifications.

**Highlights:** Zone system exposure calculation, Shadow and highlight measurement, Film ISO input, Shutter speed adjustment, Development time calculation, Aperture determination

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lghtmtr free?

Lghtmtr is free to download, with in-app purchases available.

### Is Zone Tool free?

Zone Tool costs $0.99, with no in-app purchases.

### Which has better reviews, Lghtmtr or Zone Tool?

Lghtmtr is rated higher. Lghtmtr averages 4.5 out of 5 from 129 ratings, while Zone Tool averages 2.8 from 6 ratings.

### Do Lghtmtr or Zone Tool have ads?

Neither Lghtmtr nor Zone Tool shows ads.

### Which is updated more often, Lghtmtr or Zone Tool?

Lghtmtr ships an update every 4 months, and Zone Tool every 38 months. Most recently, Lghtmtr was updated on October 14, 2026 and Zone Tool on September 21, 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.*