# Zone Tool vs Spot Meter Pro

The clearest difference is rating: Spot Meter Pro at 4.5 against Zone Tool's 2.8. Spot Meter Pro also leads on update cadence (every 2 months vs every 38 months) and chart position (#185 vs unranked). Zone Tool's advantage is review sentiment (100% vs 67%) and price ($0.99 vs $4.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Zone Tool costs $0.99 and Spot Meter Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Spot Meter Pro holds the better App Store score, 4.5 against 2.8. Both are backed by a comparable volume of ratings — 6 and 22 respectively. Written reviews complicate that: 100% of Zone Tool's written reviews are positive against 67% of Spot Meter Pro's, so the app with the better star average is not the one people write more warmly about.

Zone Tool ships an update every 38 months, Spot Meter Pro every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Zone Tool | Spot Meter Pro |
| --- | --- | --- |
| Price | **$0.99** | $4.99 |
| Rating | [2.8 (6 ratings)](https://appshunter.io/ios/app/zone-tool/id1489637620/reviews) | **[4.5 (22 ratings)](https://appshunter.io/ios/app/spot-meter-pro/id1558581037/reviews)** |
| Number of ratings | 6 | **22** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#185** |
| Size | 0 MB | 75 MB |
| Requires iOS | **12.2** | 14.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jouni Erola](https://appshunter.io/developer/295758397) | [Tebo Labs Inc.](https://appshunter.io/developer/1444921808) |

## What reviewers say

### 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


### Spot Meter Pro

[App page](https://appshunter.io/ios/app/spot-meter-pro/id1558581037)

**Currently charting:** #185 Top Paid · Photo & Video (US App Store)

This app functions as a professional light meter for film photography, measuring light within a 2° angle of view. It offers customizable settings for aperture, shutter speed, and film speed, along with logging capabilities for readings.

**Highlights:** 2° FOV light metering, Av and Tv priority modes, Zone System and Tone Picker metering, Customizable increments and range, Log readings, 1° FOV with telephoto lens, Meter calibration

**In-app purchases:** none


## Frequently asked questions

### Is Zone Tool free?

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

### Is Spot Meter Pro free?

Spot Meter Pro costs $4.99, with no in-app purchases.

### Which has better reviews, Zone Tool or Spot Meter Pro?

Spot Meter Pro is rated higher. Zone Tool averages 2.8 out of 5 from 6 ratings, while Spot Meter Pro averages 4.5 from 22 ratings.

### Do Zone Tool or Spot Meter Pro have ads?

Neither Zone Tool nor Spot Meter Pro shows ads.

### Which is updated more often, Zone Tool or Spot Meter Pro?

Zone Tool ships an update every 38 months, and Spot Meter Pro every 2 months. Most recently, Zone Tool was updated on October 24, 2026 and Spot Meter Pro 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.*