LED Light Flicker Meter

LED Light Flicker Meter

Contechity AB·4.8 ★·FREE
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Screenshots

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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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Ratings & Reviews

4.8

486 ratings

10,000+ downloads

5★
90%
4★
0%
3★
10%
2★
0%
1★
0%

Recent Reviews

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.

21 July 2026

21 July 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

27 June 2026

26 June 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!

19 June 2026

19 June 2026

Sebestyén Bodnár

v3.3.2

always see one of the 2 error: too dark or to bright to realible measurement 🤷 and scale shows 98% flickering, whst the hell is that 98%? ehat should be a number of frequency, eg 60/sec

Developer Response

Hi Sebestyén! Sorry for the confusion. Those two messages are warnings, not errors - it might still work OK. The 98% represents the flicker percentage (relative depth). To show frequency in Hz, tap the lower gauge and calibrate for your device. Also feel free to contact me directly for further assistance at apps@contechity.com. Thank you!

13 June 2026

11 June 2026

Dale Burr

v3.3.2

Great app, this has identified lights and TVs with excessive flicker. These are now in the process of being replaced which hopefully will help with my migraines! Thank you.

Developer Response

Dale, so glad the app helped you track down the problematic lights and TVs! I genuinely hope it makes a real difference for you. Thanks for sharing this — it means a lot to hear!

11 June 2026

10 June 2026

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