Flicker Meter for Light - PWM 4+
Screen LED Eye Strain Headache
Bjorn Folkstedt
-
- Free
- Offers In-App Purchases
Screenshots
Description
Headache or eye strain without a known cause? Is it caused by LED lights or screens? Test them with this unique app that measures high frequency flickering of light.
Suffering from eye strain, headaches, or migraines from LED lights and screens? You're not alone. Many LED lights, screens, and fluorescent lights flicker at high frequencies invisible to the naked eye, yet capable of causing headaches, eye strain, fatigue, and other symptoms.
This app helps you identify which light sources and screens are flickering, measure the intensity, and find flicker-free alternatives for your health and comfort.
FEATURED IN COMPUTER ACTIVE MAGAZINE
Computer Active recommends this app for detecting headache-inducing flicker.
KEY FEATURES
• Detect invisible high-frequency flickering in LED lamps, screens, and fluorescent lights
• Measure flicker intensity in percentage
• Measure flicker frequency in Hz
• Identify flicker-free light sources
• Easy-to-use interface with instant results
HEALTH BENEFITS
• Reduce eye strain and fatigue
• Minimize headaches and migraines
• Create a more comfortable work environment
• Make informed decisions about lighting purchases
PERFECT FOR
• Office workers spending long hours under artificial lighting
• People sensitive to light flicker
• Anyone experiencing unexplained headaches or eye strain
• Professionals evaluating workplace lighting
Full support for 40 languages with integrated documentation.
Privacy Policy: https://flicker-meter.contechity.com/pp.html
End User License Agreement: https://flicker-meter.contechity.com/eula.html
Got questions or feature requests? Email me at apps@contechity.com — I'll personally respond.
Download Flicker Meter today and take control of your lighting environment for better health and comfort!
What’s New
Version 3.0.4
• Stability improvements for certain devices
Please rate the app here on the App Store - it helps others find the app and gives me incentive to develop it further. Thank You!
Ratings and Reviews
UPDATE: much improved
After my initial non-positive review, the developer contacted me and put a lot of work into improving the app’s performance on my iPhone Mini 13. The new version is much more useful. Measuring flicker seems to be a hard problem because use conditions matter a lot, but within that limitation I can now say the app does what I had hoped. Four stars for performance, five stars for developer responsiveness.
Developer Response ,
Thanks a lot for reporting the problem initially and assisting me in tracking it down, so that I could solve it and make the app better for everyone! Users like you are invaluable in the development process.
Simple app that does one thing well
This is a simple app that does one thing well. It’s easy to use and understand. I’d love to be able to see the sine wave in a separate window, if the developer wants to add that feature in the future. Handy, simply, and one of the few currently available apps that read flicker. Well worth the price.
Developer Response ,
Thanks a lot for your review! Would you please let me know the reasoning behind why it is useful to have the sine wave in a separate window? Or is it that you want to be able to hide the sine wave? Please write to me at apps@contechity.com Thank you so much!
Crashing for me on the first screen
The first screen is a buy screen to pay or agree to subscribe to a trial before using the app or even seeing it
The app showed the payment screen only a few times but no buttons worked, it just crashes if I click anything
I haven’t had an app crash on iOS in so long I didn’t actually realize what happened. I rebooted my phone. It’s up to date.
Now on subsequent launches, this crashes immediately after opening now without showing a buy screen
This PWM tester app is a great idea but the dev seems so intently set on getting money from every single user and ensuring they know you will pay on the first launch they should just make this a pay app not In App Purchases
Again, this app does nothing unless you open your wallet or agree to a trial, but that didn’t work for me so it just does nothing
Developer Response ,
Oh, I am so sorry for this! Thank you so much for reporting. Actually the app can be used for a few weeks without signing up to anything - simply tap close on the paywall. But the crash is serious. Would you please send me an email so that I can learn more about it and fix this issue? It would be very valuable as I really would like to correct this! apps@contechity.com And of course I will give you a full refund. Sorry again! BR, Björn
App Privacy
The developer, Bjorn Folkstedt, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Information
- Seller
- Contechity AB
- Size
- 25.7 MB
- Category
- Utilities
- Compatibility
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- iPhone
- Requires iOS 13.0 or later.
- iPad
- Requires iPadOS 13.0 or later.
- iPod touch
- Requires iOS 13.0 or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
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English, Afrikaans, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, German, Greek, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
- 4+
- Copyright
- © 2023 Contechity
- Price
- Free
- In-App Purchases
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- Unlimited Access $0.99
- Unlimited Lifetime Access $6.99
- Unlimited Access $1.99
- Unlimited Access $4.99