# Illuminance Pulsation Meter — user reviews > 14 indexed App Store user reviews of Illuminance Pulsation Meter by ALEXEY KOZLOV, rated 4.20/5 from 32 ratings. - Source: https://appshunter.io/ios/app/illuminance-pulsation-meter/id1456605148/reviews - App overview in markdown: https://appshunter.io/ios/app/illuminance-pulsation-meter/id1456605148.md - Rating breakdown: 5★ 19 · 4★ 6 · 3★ 2 · 2★ 3 · 1★ 2 ## Most critical reviews (10 lowest-rated) ### 1/5 — Обман *2023-07-30, version 1.2* Приложение делает вид, что оно что-то измеряет, но стрелка живет своей жизнью. Приложение бесполезное. ### 1/5 — Not at all accurate *2022-12-24* This is totally off. Seems to be doubling flicker rates or more. Way off. **Developer response:** Hello! The application allows you to measure the ripple coefficient of radiation sources in the visible spectrum. It is important to keep your phone still. Hand tremors greatly affect the measurement results. The application does not turn your device into a professional measuring device, but allows you to determine the degree of pulsation of the light flux, its absence or presence. ### 1/5 — Funktioniert überhaupt nicht! *2019-04-20, version 1.0* Habe das Programm geladen. Leider funktioniert das nicht! ### 2/5 — Not clear what it does *2023-01-14* It outputs a number from 0 to 100. What does it mean? Main frequency? Intensity? Something else? **Developer response:** Hello! The pulsation of the light flux is measured as a percentage (%). 100% when the light source goes out completely and lights up, for example, at a frequency of 100 hertz, the light goes out and lights up 100 times per second. The human eye cannot detect this flicker, but it has a strong effect on fatigue. ### 2/5 — Background information *2020-02-03* I like the app but not totally sure what it is telling me. More strobing is bad I’m sure but more info on what should I be thinking about doing based on the readings I’m getting? **Developer response:** Hello! These measurements will help you understand how large the ripple (flicker) coefficient is. Anything with a value above 10-15% has a high ripple. The higher the coefficient, the stronger the effect on eye fatigue and the general condition of the body. The data obtained will help to choose lamps without flicker. ### 2/5 — Confused *2019-12-09* You say the average error percentage could be greater than 10%. Is there an upper limit? I am testing a flicker free light bulb and i her a reading of 38%. **Developer response:** Hello! Such errors occur if the phone shakes. The stronger the shaking of the hands, the greater the error. For accurate measurements, eliminate other light sources and hold the phone still. ### 3/5 — Unklar *2025-09-06, version 1.2* Was bedeuten denn die genesenen Werte????? Das wird in der App nicht erklärt! ### 4/5 — Good app with lots of potential *2023-11-24* Can only measure frequencies up to 100hz. Would love to see some more advanced frequency counting or use of the slow motion camera to measure higher frequencies. The onboarding process is a bit much, could probably simplify that as using the app is very straight forward. **Developer response:** Hello! Fatigue is affected by pulsations up to 300 Hz and most often light sources pulsate at 100 Hz. This is due to the mains voltage and inexpensive light power supplies. Thank you for your feedback. We are constantly working to improve our product. ### 5/5 — Sehr hilfreich bei der LED- und Monitor-Auswahl *2022-01-24, version 1.2* Bin immer total genervt von Stoboskop-ähnlicher Beleuchtung - mit dieser App kann man direkt im Laden testen, ob das Licht einer LED-Leuchte flackerfrei ist. Oder am Arbeitsplatz dem Chef/Kollegen beweisen, dass die Beleuchtung (oder der Monitor) flackern (oder auch nicht, je nach dem). ### 5/5 — It Works!! *2021-09-26* Great to see that the light fittings I have always hated are actually flickering (& how much). I would like to take a Live Photo or short video within the app to show to the electrician (& husband!) to make it easier to record the results, with a name for each light fitting. But I can use screen recording as an easy workaround. Overall very happy. **Developer response:** Thank you for your feedback, functionality will be added in future updates. ## Most praised reviews (4 highest-rated) ### 5/5 — Sie tut was sie soll. *2020-02-17, version 1.2* Ich bin jemand, der empfindlich reagiert wenn LEDs mit pulsierter Spannung angesteuert werden (PWM). Abhängig von Frequenz und Impulsbreite sehe ich den so genannten Perlschnureffekt. Zur schnellen Überprüfung, wie stark LEDs flackern, habe ich mir diese App zugelegt und kann So im Geschäft das Flackern von Lampen überprüfen. Ich bin mit der App sehr zufrieden. ### 5/5 — 5s вылетает *2019-12-26, version 1.1* Вылетает после измерения на 5s Исправте пожалуйста! ### 5/5 — Finally, one that works *2019-11-09* I use this for my work to easily identify LED’s that are flickering. I can check one hundred LED’s in under one minute whereas before it took several minutes. A great utility. **Developer response:** Thank you for your feedback. ### 5/5 — Great app! *2019-10-16* I use this app to tell me if my light bulbs, computer monitors, and TVs are junk or not. This app is easy to use. Most monitors are flicker-free, but most LED lightbulbs are not. I would love it if the developer could provide even more information about this topic. This app is well worth the money. Protect your eyes and health. **Developer response:** Hello! Thank you for your feedback. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*