Light meter in your pocket!
The only app you really need to measure light intensity. Calibrated with professional Illuminometer.
- Realtime measurements
- One-time measurement
- Average and Max values
- Indoor and outdoor modes
- 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: email@example.com
- fixed bug with max and average value reset
Ratings and Reviews
No customer service. Indoors vs outdoors odd. No color temperature.
Do not expect customer service to ever answer any questions or emails.
Light levels are absolute levels of brightness. Therefore, it's very odd that there is an indoor/outdoor button to set. The two settings get very different readings. Why? It should not matter whether the reading is indoors or outdoors. The number is simply a function of how bright it is.
Other apps on the App Store will also tell you what the color temperature of the light is. That can be very useful in knowing whether it's bluish or yellow-ish. This app does not give you that.
thank you for using Light Meter and sorry for inconvenience. The app is using Neural Networks to measure light levels. Since we don't have access to the light sensor directly we have to approximate measurements from camera readings. And you're right i'm using brightness level to measure but not only. Exposure time. F-number and other readings. While calibrating i noticed that my neural network shows better results if I split measurement modes into indoor/outdoor. It helped me to improve precision. At the moment sum squared error is about 9% on 5000+ calibration samples. I bet it's the best result on App Store. And thank you for a nice idea. I'll add color temperature measurement mode with upcoming update.
Disregard any negative comments! From an app developer standpoint I appreciate the effort put into this app. For reading light values from a camera, this is very accurate. Buying this app you have to know that it's coming from an iPhone, not a comercial light meter! Great job!
Bought this app thinking it would be nice to not have to carry a commercial light meter with me on project sites. However, when I put it side by side with a commercial light meter (LX 1330B) the readings were not even close to each other. The app readings were less than half those reported by a professional meter and were less responsive to changes in levels when in continuous read mode. I will be deleting the app.
With Family Sharing set up, up to six family members can use this app.