LED Light Flicker Meter

LED Light Flicker Meter

Contechity AB·FREE
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Description

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.

The app now supports 40 different languages.

Free for a Limited Time
Enjoy full functionality for a few weeks. Afterwards, a one-time fee or subscription is required.

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

Developer

Contechity AB

Developer ID: 8434403958514072485

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Recent Reviews

Tomer Vromen

v3.4.0

Does what it says!

Developer Response

Thank you! Happy to hear Flicker Meter delivers on its promise. If you ever have questions or feedback, feel free to reach out at apps@contechity.com

Sep 13, 2026

Sep 11, 2026

David Lee

v3.3.3

Easy enough to get started and get the flicker %. Can't say I've assessed for accuracy... But it's good enough for my purposes (seeing if the lights have big swing/ flicker to check if the lights are setting off my autistic toddler).

Developer Response

Hi David, thank you for the 5-star review! I'm touched to hear Flicker Meter is helpful in checking the lighting for your toddler and creating a comfortable space. Thank you so much for sharing!

Aug 25, 2026

Aug 25, 2026

Dávid Harmath

v3.3.3

It's not scientifically accurate, but it really worked for me. The camera app cancels out flicker automatically, so it was nice to see the picture without that. The paywall can be closed, you can use the app for free. I have a quite good camera, not sure if it works on cheap/old phones. I changed some light bulbs, thanks!

Developer Response

Thanks Dávid! Really glad it helped you identify and replace problematic light bulbs. Thanks for sharing! Also feel free to contact me directly.

Jul 21, 2026

Jul 21, 2026

Jacob Dodson

v3.3.3

app is unusable without paying $7

Developer Response

Sorry about that. Flicker Meter is free to use for a few weeks (tap close on the paywall), after which a subscription or one-time purchase is required. Even an indie developer needs to make a living. If you didn't have enough time, I can prolong your test period - reach out at apps@contechity.com

Jun 27, 2026

Jun 26, 2026

PAUL Anderson (Pander50)

v3.3.3

it works great for my biological luminous experiment..

Developer Response

Thanks, Paul — I’m really glad Flicker Meter is useful for your biological experiment! Thank you for sharing!

Jun 19, 2026

Jun 19, 2026

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