# Luminometer: Lux Light Meter — Measure Luminosity in LM & FC

> Device-based light meter for measuring lux and foot-candles accurately. (iPhone/iPad app by 27GROUP.)

- Source: https://appshunter.io/ios/app/luminometer-lux-light-meter/id6446325225 (this page in markdown: same URL + `.md`)
- Developer: [27GROUP](https://appshunter.io/developer/1589401961)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.00/5 from 13 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.6 · 14 MB
- Languages: English
- Released: 2023-03-24
- Data updated: 2026-06-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/luminometer-lux-light-meter/id6446325225/reviews.md

## What is Luminometer?

Luminometer is an exceptional app that is designed to transform your iPhone or iPad into a professional and user-friendly light meter. It is based on Internal Exposure Compensation, which makes it the most accurate lux meter available on the market today. With Luminometer, you can easily measure the lux of any light source in both lx and foot-candle units without having to spend any money on professional equipment.

One of the standout features of Luminometer is the ability to swiftly and efficiently set up your greenhouse, living room, workplace, study room, or any other area with the perfect level of illumination. Our app ensures that you achieve a well-lit environment that is comfortable to work in without causing any unnecessary glare.

The app is incredibly versatile, making it consistent for use in various lighting conditions such as plant lighting, household lighting, workstation lighting, and mood lighting. No matter the type of lighting you need to measure, Luminometer is up to the task.

With Luminometer, you get a comprehensive set of features that enable you to measure lux with ease. The camera view feature allows you to view the area being measured, making it even more user-friendly. The app is calibrated using top reference equipment, ensuring that your measurements are always precise and reliable.

Whether you're dealing with ambient indoor and outdoor lighting or task and accent lighting, Luminometer has you covered. You can trust that our app is accurate and reliable, thanks to our calibration process, which is done using the best reference equipment available.

In conclusion, if you're looking for an accurate, versatile, and easy-to-use light meter app, then Luminometer is the perfect solution for you. Get started today and experience the benefits of using our app to achieve the perfect level of illumination for any environment.

Terms and pricing:
Our weekly subscription costs $3.99 USD/week and provides you with unlimited access to premium features, as long as your subscription remains active. The subscription automatically renews, and payment will be charged to your iTunes account when you confirm the initial purchase. If you do not wish to renew your subscription, you may turn off the auto-renewal option in your Account Settings at least 24-hours before the current subscription period ends. For more information, please refer to our terms of service available at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ or privacy policy on https://27groupts.notion.site/Privacy-Policy-for-Luminometer-iOS-App-68f7e665c2924108a9111eae825e53c7

## Key features

- Measures lux and foot-candle units
- Internal Exposure Compensation for accuracy
- Camera view for measured area
- Calibrated with reference equipment
- Versatile for various lighting conditions
- Helps set optimal illumination levels

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/luminometer-lux-light-meter/id6446325225/reviews.md

### 2/5 — Needs work

*2023-07-21*

First of all you need a diffuser to get accurate measurements. You can make one out of a piece of a paper.. but you need to place it over the camera. The best way to do that is wrap around your phone…. Directly where the “x” is on the ads..
If the ads were lower and you told people about the diffuser Id say 5 stars🤷🏻‍♂️

## Frequently asked questions about Luminometer

### What is Luminometer?

Luminometer is a utility app that turns your iPhone or iPad into a professional light meter. It measures luminosity in lux and foot-candle units, helping you achieve optimal lighting conditions for various environments.

### How accurate is Luminometer?

Luminometer utilizes Internal Exposure Compensation for high accuracy and is calibrated using top reference equipment, ensuring precise and reliable measurements.

### What devices does Luminometer support?

Luminometer is available for iPhone and iPad devices.

### What is the age rating for Luminometer?

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

### How often is Luminometer updated?

The app was last updated on February 20, 2025, indicating ongoing development and support.

### Does Luminometer have ads?

Yes, Luminometer contains advertisements.

### What are the subscription options for Luminometer?

Luminometer offers a weekly subscription for $2.99/P7D, providing unlimited access to premium features. This subscription automatically renews.

### How can I cancel my Luminometer subscription?

To cancel your Luminometer subscription, you need to turn off the auto-renewal option in your Account Settings at least 24 hours before the current subscription period ends.

## Version history (last 5 releases)

### 1.0.5 — 2025-02-20

minor bugs fixed and performance improvements

### 1.0.3 — 2023-07-03

minor bugs fixed and performance improvements

### 1.0.2 — 2023-04-19

If you appreciate the app, please take a moment to rate it on the app store. This edition eliminates banner ads and reduces the frequency of video ads.

### 1.0.1 — 2023-04-10

This version include some improvements to the app by fixing minor bugs and enhancing the user interface and experience.

### 1.0 — 2023-03-24

No release notes.

## Apps similar to Luminometer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Light Meter: Lux-525 Pro](https://appshunter.io/ios/app/light-meter-lux-525-pro/id1636117065) | 4.5 (113) | Free | Utilities |
| [Plant Light Meter](https://appshunter.io/ios/app/plant-light-meter/id1213431133) | 4.6 (1,042) | $2.99 | Utilities |
| [Lux Light Meter for Mobile](https://appshunter.io/ios/app/lux-light-meter-for-mobile/id1638732220) | 4.4 (190) | Free | Utilities |
| [Lux Light Meter Pro](https://appshunter.io/ios/app/lux-light-meter-pro/id1292598866) | 3.9 (4,992) | Free | Utilities |
| [Light Meter LM-3000](https://appshunter.io/ios/app/light-meter-lm-3000/id1554264761) | 4.5 (2,424) | Free | Utilities |
| [Photo Light & Exposure Meter](https://appshunter.io/ios/app/photo-light-and-exposure-meter/id1297903210) | 4.5 (3,154) | Free | Utilities |

## More apps by 27GROUP

- [27GROUP](https://appshunter.io/ios/app/27group/id1589401959)
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- [Essay Writer AI Writing Helper](https://appshunter.io/ios/app/essay-writer-ai-writing-helper/id6446758407)
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All apps by 27GROUP: https://appshunter.io/developer/1589401961

## Related topics

[medidor de luz](https://appshunter.io/ios/topics/medidor-de-luz) · [lux products](https://appshunter.io/ios/topics/lux-products) · [light meter foot candles](https://appshunter.io/ios/topics/light-meter-foot-candles) · [foot candle meter](https://appshunter.io/ios/topics/foot-candle-meter)

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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 2026-06-07.*