# Photometrics + — Simple Photometrics Calculator

> Photometrics and Pythagorean theorem calculator for lighting calculations. (iPhone/iPad app by Jonathan Mulvaney.)

- Source: https://appshunter.io/ios/app/photometrics-plus/id1362927473 (this page in markdown: same URL + `.md`)
- Developer: [Jonathan Mulvaney](https://appshunter.io/developer/991653147)
- Category: Productivity, Utilities
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 49 MB
- Languages: American English
- Released: 2018-04-22
- Data updated: 2026-08-08
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/photometrics-plus/id1362927473/reviews.md

## What is Photometrics +?

A Simple Photometrics & Pythagorean Theorem calculator.

FEATURES:
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- Calculates field diameter (feet or meters)
- Calculates illuminance (footcandles or lux)
- Quickly find the throw distance for a lighting fixture with the Pythagorean Theorem calculator.
- Built-in library of commonly used theatrical lighting fixtures.
- Custom lighting fixture option (useful for fixtures not included with the built-in library).

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Thank you very much for checking out this simple photometrics application.  
Please take a moment to provide your feedback and/or give the app a rating.

***************

## Key features

- Field diameter calculation
- Illuminance calculation
- Pythagorean theorem calculator
- Lighting fixture library
- Custom fixture option

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/photometrics-plus/id1362927473/reviews.md

### 5/5 — Love this app!!

*2020-04-20*

So simple and useful. Can’t live without it!  Great for quick calculations.

### 5/5 — good light

*2019-04-08*

10/10 would light again

## Frequently asked questions about Photometrics +

### What is Photometrics + used for?

Photometrics + is used to calculate field diameter and illuminance for lighting. It also includes a Pythagorean theorem calculator to determine the throw distance of lighting fixtures.

### Does Photometrics + have ads?

No, Photometrics + does not contain advertisements. It is a completely ad-free application.

### What devices does Photometrics + support?

Photometrics + is available on iPhone, iPad, and iPod devices.

### How often is Photometrics + updated?

The latest version of Photometrics + is 1.1, last updated on May 5, 2018. The app was initially released on April 22, 2018.

### Can I add my own lighting fixtures to Photometrics +?

Yes, Photometrics + offers a custom lighting fixture option, which is useful for fixtures not included in the built-in library.

### What is the age rating for Photometrics +?

Photometrics + has an age rating of 4+, making it suitable for a wide range of users.

### What units can Photometrics + calculate in?

Photometrics + can calculate field diameter in both feet and meters, and illuminance in both footcandles and lux.

### What do users think of Photometrics +?

Based on the available data, Photometrics + has a perfect rating of 5.0 stars from 3 ratings, indicating very positive user sentiment.

## Version history (last 2 releases)

### 1.1 — 2018-05-05

This app has been updated by Apple to display the Apple Watch app icon.

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- Added option to use meters
- Easily toggle between feet/footcandles & meters/lux
- Minor bug fixes
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### 1.0 — 2018-04-18

No release notes.

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## More apps by Jonathan Mulvaney

- [Cue 1 Remote](https://appshunter.io/ios/app/cue-1-remote/id991653148)
- [Stage Invaders](https://appshunter.io/ios/app/stage-invaders/id1572202361)

All apps by Jonathan Mulvaney: https://appshunter.io/developer/991653147

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-08.*