LED Light Flicker Meter

In-app purchases
4.0
83 reviews
5K+
Downloads
Content rating
Everyone
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About this app

Have you experienced eye strain, headache, migraine or other symptoms from being exposed to flickering lights or screens? Use this app to measure which lights or screens are flickering and how much and which are flicker-free!

This app measures flickering of light that are flickering/blinking so quickly so that we cannot usually see it with our eyes. But it can still have a negative affect on us - eye strain, headaches, migraines and even epilepsy seizures are reported as consequences of flickering lights. With this app you can measure if your LED lamps, LED bulbs, fluorescent tube lights and screens are flickering and how much.

How to Use the App?
Place the phone in a position so that the camera is facing a surface, such as a white paper, an evenly colored wall or a floor, that is lighten by the light source you want to measure the flickering from. It is very important to let the phone stand still during the measurements as movement can cause the meter to measure a too high flickering value.

What is a Flickering Percentage?
The percentage flickering is the apps estimation of the difference between the maximum and minimum light output from a light source. A flickering measurement value of 25% means that the minimum light varies between 75% and 100% light output. A light that switches off completely in each cycle will have a flickering measurement of nearly 100%. A light that does not vary in light output will have a flickering measurement of nearly 0%.

How Accurate are the Measurements?
As long as the phone during measurements is standing absolutely still, without any movements and are directed towards an even surface, the accuracy seems to be within plus/minus five percentage points under normal circumstances on most devices.

Contact
I am always interested in hearing from you. Feel free to contact me with questions, complaints and improvement ideas. I try to answer all emails.
apps@contechity.com
Updated on
Feb 9, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.0
81 reviews
Aliaksandr Radzivanovich
September 19, 2023
This app is more suitable for measuring flicker of bright light sources, like lamps. I tried to measure flicker of the OLED display of my laptop (which caused me so much pain and suffering), and it was too dark for the app to reliable measure flicker. However the app showed life feed from the camera from which I was able to confirm strong display flicker. The feed was very dim, but showed strong bands on the display which is an indication of flicker.
5 people found this review helpful
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Contechity
September 19, 2023
Thanks a lot for your review Aliaksandr! If you hold your phone against the OLED display while it is showing a white screen, I hope the light will be strong enough. Even if the app warns about low light, most of the time it manages to measure the flickering percentage fairly correctly anyhow. Thanks again! apps@contechity.com
jamie robb
February 17, 2024
Works well, it seems. Tested on Philips wake-up lamp, massive flickering. Hue light strips? Nothing. PC screen? Nada. OLED? yep.
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Tobias Ahlskog
January 30, 2023
Works, was able to detect that a led strip was flickering a lot. Fixed by adding 10000uF capacitor on driver output side. According to app flickering decreased from 97% to 38%. And the eye strain i could previously feel when observing the light was gone. And now I know to avoid that brand of led drivers. Useful for detecting flickering beyond what the eye can perceive, above 60hz or so.
3 people found this review helpful
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Contechity
May 8, 2023
Thanks a lot for your 5-star review - it is very much appreciated! Really cool to hear how you used the app to improve your LED light strip and got rid of the eye strain! Please let me know at apps@contechity.com if you have any ideas on how to improve the app further. Thanks again for using my app!

What's new

• Misc minor improvements.
Questions or suggestions? Please write to me at apps@contechity.com