Light Meter is an easy-to-use, functional light intensity (lux) meter perfect for measuring, comparing, and adjusting lighting levels in your environment, whether at work or at home.

Using multiple device sensor inputs, this small, convenient app collects light intensity data at the click of a button. It is indispensable when using a manual or film camera, without the need for expensive instruments that often cost hundreds of dollars. Great for setting up your greenhouse light settings, avoiding workplace lighting induced eye strain, or checking if your desk or craft station needs a bit more light.

- Realtime measurements
- One-time measurement
- Average and Max values
- Front and rear cam
- Lux and Foot candle measurements

Please note that Light Meter app is not a replacement for a professional device and should be used for private purposes only.

Have any questions or suggestions? Write to us:

What’s New

Version 2.0

Please be sure to rate this new version on the App Store and leave a review.
Your feedback is greatly appreciated and helps us continue updating Light Meter!

• Bugfixes
• Stability improvements

Ratings and Reviews

4.2 out of 5
3.1K Ratings

3.1K Ratings

Jamie-12/3/4 ,

Simple, functional, useful

Nice, simple, straightforward app with good user interface. Good set of options make it very functional. The measurements seem reasonable and more importantly - they’re consistent. A source measured yesterday will be measured at the same value today. Also has a very nice explanation of terminology for the uninitiated. My only complaint is the overly frequent ads. Other users comment that the ads remain in the Pro version, so no reason to upgrade until this is changed. A definite 5-star app without the ad problem.

jeelock ,

Don’t waste your money. Worst app ever

Got this a few days ago and it seemed to work fairly decent. Using it to compare lighting in different areas.
Went ahead and paid for the pro version.
Next day it will not work. Does absolutely nothing. Checked it off and on for the past couple of days and it still does nothing or at best gives some ludicrous reading then freezes up. Went to the feedback area in the app where it says u can contact them several times. Getting a message ‘trying to connect thank you for your patience’. Never connects.
I guess I’m not THAT patient. Deleting this trashy worthless app from my iPhone X.
I’ll never pay for the upgrade again until I use it several days with success.

Fredjikrang ,

Handy, questionable accuracy

I do lighting design for work, so it is nice to have a light meter app on my phone for on the spot measurements, but it doesn’t seem to be very accurate. I did a few comparisons with a DLM112SD meter we have at work and they were very different.


Marina Polyanskaya
67 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Russian, Simplified Chinese, Spanish

Age Rating
In-App Purchases
  1. Pro Mode $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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