# DOT dataCalc vs Photometrics

The clearest difference is review sentiment: Photometrics at 67% against DOT dataCalc's 13%. Photometrics also leads on in-app purchases (none vs 2) and iOS requirement (15.6 vs 17.0). DOT dataCalc's advantage is update cadence (monthly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. DOT dataCalc sells 2 in-app purchases, starting at $1.99 per month. Photometrics asks for nothing beyond the download.

DOT dataCalc ships an update monthly, Photometrics every 5 months. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DOT dataCalc | Photometrics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (7 ratings)](https://appshunter.io/ios/app/photometrics/id733009338/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 12.5% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Freemium | **Free** |
| Size | 1 MB | 105 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JOSE F DA SILVA NT](https://appshunter.io/developer/524992898) | [ARRI Group](https://appshunter.io/developer/733009342) |

## What reviewers say

### DOT dataCalc

[App page](https://appshunter.io/ios/app/dot-datacalc/id524992895)

This app helps digital cinema and video professionals estimate storage needs for their recordings. It calculates file sizes based on chosen camera models, codecs, and recording durations. Access to all features may require a subscription.

**Highlights:** Instant storage estimation, Camera setup options, Supports numerous camera models, Calculates file size by recording time, Multiple codec support, Subscription for full features

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $4.99 | per year |


### Photometrics

[App page](https://appshunter.io/ios/app/photometrics/id733009338)

Access photometric data for ARRI light fixtures, including discontinued models and electronics ballasts. Features include illuminance, beam angle, luminous distribution graphs, and light properties. Tools for comparison, DMX calculations, and product catalogs are also available.

**Highlights:** Photometric data (illuminance, beam angle), Luminous distribution graphs, Light properties (CRI, TM30, TLCI), Metric and Imperial units, Camera exposure information, Project creation and preset saving, Lamphead comparison tool

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

**In-app purchases:** none


## Frequently asked questions

### Is DOT dataCalc free?

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

### Is Photometrics free?

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

### Do DOT dataCalc or Photometrics have ads?

Neither DOT dataCalc nor Photometrics shows ads.

### Which is updated more often, DOT dataCalc or Photometrics?

DOT dataCalc ships an update monthly, and Photometrics every 5 months. Most recently, DOT dataCalc was updated on October 5, 2026 and Photometrics on October 6, 2026.

---

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