# Photometrics vs Thetis Tools

Photometrics and Thetis Tools are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Photometrics ships an update every 5 months, Thetis Tools every 7 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Photometrics | Thetis Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (7 ratings)](https://appshunter.io/ios/app/photometrics/id733009338/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Free | — |
| Size | 105 MB | 50 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ARRI Group](https://appshunter.io/developer/733009342) | [Thetis srl](https://appshunter.io/developer/397584184) |

## What reviewers say

### 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


### Thetis Tools

[App page](https://appshunter.io/ios/app/thetis-tools/id1460268980)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Photometrics free?

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

### Is Thetis Tools free?

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

### Do Photometrics or Thetis Tools have ads?

Neither Photometrics nor Thetis Tools shows ads.

### Which is updated more often, Photometrics or Thetis Tools?

Photometrics ships an update every 5 months, and Thetis Tools every 7 months. Most recently, Photometrics was updated on October 23, 2026 and Thetis Tools on October 26, 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.*