# Metriflash vs ZoneCalc

The clearest difference is in-app purchases: Metriflash at none against ZoneCalc's 1. ZoneCalc's advantage is iOS requirement (17.6 vs 26.2). On price there is nothing between them.

Both are free to download. ZoneCalc sells 1 one-off in-app purchase. Metriflash asks for nothing beyond the download.

## The numbers

| Metric | Metriflash | ZoneCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zonecalc-zone-system-meter/id6772102746/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 3 MB | 3 MB |
| Requires iOS | 26.2 | **17.6** |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Support.pl Sp.z.o.o](https://appshunter.io/developer/1766109449) | [Juergen Suk](https://appshunter.io/developer/6772102748) |

## What reviewers say

### Metriflash

[App page](https://appshunter.io/ios/app/metriflash/id6760436090)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Metriflash free?

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

### Is ZoneCalc free?

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

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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.*