# ZoneCalc vs mySpotMeter

The clearest difference is price: ZoneCalc at Free against mySpotMeter's $5.99. ZoneCalc also leads on rating (5.0 vs 4.2) and iOS requirement (17.6 vs 26). mySpotMeter's advantage is in-app purchases (none vs 1) and update cadence (every 2 days vs every 3 weeks). On ads and device support there is nothing between them.

ZoneCalc is free to download; mySpotMeter costs $5.99 up front. ZoneCalc sells 1 one-off in-app purchase. mySpotMeter asks for nothing beyond the download.

ZoneCalc holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

ZoneCalc ships an update every 3 weeks, mySpotMeter every 2 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ZoneCalc | mySpotMeter |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zonecalc-zone-system-meter/id6772102746/reviews)** | [4.2 (6 ratings)](https://appshunter.io/ios/app/myspotmeter/id6789911475/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | **Freemium** | Paid |
| Best chart rank | — | **#47** |
| Size | 3 MB | 11 MB |
| Requires iOS | **17.6** | 26 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Juergen Suk](https://appshunter.io/developer/6772102748) | [David Quiles](https://appshunter.io/developer/578971109) |

## What reviewers say

### ZoneCalc

[App page](https://appshunter.io/ios/app/zonecalc-zone-system-meter/id6772102746)

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.

**Highlights:** Zone System exposure calculation, Multi-point metering, Reciprocity correction, Development adjustment recommendations, Film-specific development times, Calculation history and export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZoneCalc Pro | $3.99 | one-time |


### mySpotMeter

[App page](https://appshunter.io/ios/app/myspotmeter/id6789911475)

**Currently charting:** #47 Top Paid · Photo & Video (US App Store)

This app transforms your iPhone into a precise spot meter for photographers. It allows for detailed exposure control by measuring specific areas, evaluating contrast, and calculating settings for film or digital photography.

**Highlights:** Selectable 1°, 2°, and 4° spot metering angles, Dedicated readings for shadows, highlights, and middle gray, Aperture or shutter speed priority, Store and compare measurements, Instant aperture calculation, Wide ISO, shutter speed, and aperture ranges

**In-app purchases:** none


## Frequently asked questions

### Is ZoneCalc free?

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

### Is mySpotMeter free?

mySpotMeter costs $5.99, with no in-app purchases.

### Which has better reviews, ZoneCalc or mySpotMeter?

ZoneCalc is rated higher. ZoneCalc averages 5.0 out of 5 from 2 ratings, while mySpotMeter averages 4.2 from 6 ratings.

### Do ZoneCalc or mySpotMeter have ads?

Neither ZoneCalc nor mySpotMeter shows ads.

### Which is updated more often, ZoneCalc or mySpotMeter?

ZoneCalc ships an update every 3 weeks, and mySpotMeter every 2 days. Most recently, ZoneCalc was updated on October 12, 2026 and mySpotMeter on October 10, 2026.

---

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