# Light Meter - Lux Camera — Light Measurement

> Pocket-sized light meter for precise lux measurement using smartphone camera. (iPhone/iPad app by Tu Anh Do.)

- Source: https://appshunter.io/ios/app/light-meter-lux-camera/id947202507 (this page in markdown: same URL + `.md`)
- Developer: [Tu Anh Do](https://appshunter.io/developer/738947045)
- Category: Photo & Video, Utilities
- Price: Free with in-app purchases
- Rating: 2.50/5 from 31 App Store ratings · 56 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 2 MB
- Languages: American English
- Released: 2014-12-17
- Data updated: 2026-09-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/light-meter-lux-camera/id947202507/reviews.md

## What is Light Meter?

Light Meter – Professional Exposure & Lux Meter
Turn your iPhone into a powerful light meter for photography, filmmaking, video, studio lighting, and everyday light measurement.
Measure light levels in lux, foot-candles, and EV, then instantly calculate the ideal camera exposure using ISO, aperture, and shutter speed. Use precise spot metering, average metering, exposure compensation, histogram, waveform, false color, and zebra tools to better understand every lighting situation.
Professional Light Metering
Live lux and foot-candle measurement
EV and EV100 calculations
Spot, average, center-weighted, and multi-zone metering
Exposure lock and compensation
Custom calibration profiles
Measurement stability and confidence indicators
Photography & Video Tools
ISO, aperture, and shutter calculator
Exposure triangle
Histogram
Waveform monitor
False color
Zebra exposure display
Zone System
Lighting ratio calculator
Color temperature estimation
ND & Long Exposure
ND filter calculator
Long exposure calculator
Shutter speed conversion
Optical density calculations
Reciprocity calculator for film photography
Lighting Analysis
Measure key, fill, rim, and background lighting
Calculate lighting ratios
Create lighting measurement maps
Analyze lighting uniformity
Save measurements with notes and photos
Professional Workflow
Measurement history
Project-based measurement sessions
Photo and EXIF analysis
Custom reference profiles
CSV, JSON, PDF, and image export
iCloud synchronization
Apple Watch companion
Home Screen widgets
Apple Shortcuts support
Designed with a clean, modern iOS interface, Light Meter gives photographers, cinematographers, filmmakers, lighting technicians, students, and creators a powerful set of tools for understanding light and making better exposure decisions.
Note: Camera-based lux measurements are estimates and can vary by device, scene, and calibration. For professional or compliance-critical measurements, use a calibrated external light sensor.

The App offers two subscription options:
-$3.99 Monthly
-$34.99 Yearly
Prices may vary by location.

Privacy Policy: https://privacy.vanlangapps.com
Terms of Use: https://tos.vanlangapps.com

Should you choose to upgrade to a Pro subscription, payment will be charged to your iTunes account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period.

You may cancel automatic renewal and manage your subscription by selecting Manage App Subscriptions in your iTunes Account settings and selecting the subscription you want to modify. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a Pro subscription, where applicable.

## Key features

- Easy lux measurement
- High precision readings
- Real-time updates
- Unique and attractive design
- Simple and convenient to use

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Light Meter Pro Yearly | $34.99 | per year |
| Light Meter Pro Monthly | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lighte Meter Pro Lifetime | $79.99 | one-time |


## Recent user reviews (10 of 56)

All indexed reviews: https://appshunter.io/ios/app/light-meter-lux-camera/id947202507/reviews.md

### 1/5 — App ko sử dụng được

*2025-09-06, version 2.0*

App này có dấu hiệu trộm thông tin không sử dụng được

### 3/5 — для определения освещенности

*2025-08-02, version 2.0*

Не понятно, на ios 10 работает, на ios 15 просто выбивает приложение и всё после того, как разрешишь пользоваться камерой и геопозицией. В чем подвох?

### 1/5 — No Longer Maintained

*2024-10-07*

I used this app years ago and it was fine.  I tried again recently and all it does is crash upon opening.  Find a different lux meter.

### 1/5 — NEFUNKČNÍ 🤮🤮🤮

*2024-03-27, version 2.0*

🤮🤮🤮🤮🤮

### 4/5 — shows LUXes!!!

*2022-05-09, version 2.0*

i wanted an light meter app that shows LUXes, this app is the one that does that.
i am about to grow some mushrooms that required at least 400 luxes- which i had no idea howmuch light is that..
other apps want subscription, or dont show luxes at all.
the only con is that it crashes at start whole alot and i sometimes cannot start it up :-/
i am on ios 14.4 while there is 15.4.1 avail.
anyways thanks alot for this app!!!

### 1/5 — Crash crash crash

*2020-06-17*

Do you really need location info?

### 1/5 — Плохо работает

*2020-02-20, version 2.0*

Плохо работает

### 2/5 — Kinda gae

*2020-02-18, version 2.0*

This app turns me on 👄😩👈🥖

### 1/5 — Solo annunci, inutilizzabile

*2019-08-31, version 2.0*

Inutilizzabile. Si blocca continuamente per obbligarti a vedere annunci pubblicitari. Eliminato subito.

### 5/5 — Works good

*2019-08-22, version 2.0*

The app works on my iPhone 7plus and no problem through the camera I test my new light and awesome 8596 Lux

## Frequently asked questions about Light Meter

### What does this app do?

This app functions as a light meter, allowing you to measure ambient light levels in lux directly from your smartphone. It utilizes the device's rear camera to provide quick and precise readings for personal use.

### How do I use the lux measurement feature?

To use the lux measurement, simply open the app and point your phone's rear camera towards the light source you want to measure. Tap the screen to display the current lux reading, and tap again for continuous real-time measurements.

### Is this app free to use?

Yes, this application is available for free. There are no in-app purchases or advertisements mentioned, making it a completely free tool for light measurement.

### Can this app replace a professional lux meter?

While this app offers high precision for personal use and can save you money on professional equipment, it is explicitly stated that it cannot replace a professional lux device. It is intended for personal purposes only.

### What are some common uses for this app?

Common uses include checking light levels for photography, determining adequate lighting in a room for comfort or tasks, or simply for educational purposes to understand illuminance. It's a convenient tool for quick personal light assessments.

## Version history (last 3 releases)

### 2.1 — 2026-08-19

-improve UI/UX

### 2.0 — 2015-06-02

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

-Bug fix

### 1.0 — 2014-12-17

No release notes.

## Apps similar to Light Meter

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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All apps by Tu Anh Do: https://appshunter.io/developer/738947045

## Related topics

[lux pro view](https://appshunter.io/ios/topics/lux-pro-view) · [brightness measure](https://appshunter.io/ios/topics/brightness-measure) · [brightness meter](https://appshunter.io/ios/topics/brightness-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 2026-09-06.*