# Illuminance Pulsation Meter — Find the flicker of light

> Measures light source ripple coefficient to detect screen flicker. (iPhone/iPad app by ALEXEY KOZLOV.)

- Source: https://appshunter.io/ios/app/illuminance-pulsation-meter/id1456605148 (this page in markdown: same URL + `.md`)
- Developer: [ALEXEY KOZLOV](https://appshunter.io/developer/1393860478)
- Category: Utilities
- Price: $3.99
- Rating: 4.20/5 from 32 App Store ratings · 14 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 5 MB
- Languages: American English, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 20 more
- Released: 2019-03-26
- Data updated: 2026-08-18
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/illuminance-pulsation-meter/id1456605148/reviews.md

## What is Illuminance Pulsation Meter?

The application will help you choose a lamp, monitor or laptop with a screen without pulsations.
A high coefficient of pulsation can affect fatigue, well-being and eye strain.

The application allows you to measure the ripple coefficient of radiation sources in the visible spectrum:
- LED, halogen, fluorescent lamps and incandescent lamps
- various lamps
- LCD and LED monitors and TVs

The readings are not 100% reliable and the average error depending on the light source and the frequency of pulsation can be more than 10%.

In order to take measurements, you need to bring the phone to the measured source and press the start button. The measurement results will be updated in real time, the arrow will show the ripple factor, and the scale will be filled from green to red. For best results, keep your phone straight. If the phone is not fixed, an image of the shaking device will appear in the lower left corner of the screen and the readings will be very different from the actual ones.

## Key features

- Measure ripple coefficient of light sources
- Test LED, LCD, and fluorescent lamps
- Monitor screen flicker in real-time
- Visual indicator scale from green to red
- Guidance for stable phone positioning

## Chart rankings

- #183 in Top Paid · Utilities (US App Store)

## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/illuminance-pulsation-meter/id1456605148/reviews.md

### 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.

### 1/5 — Обман

*2023-07-30, version 1.2*

Приложение делает вид, что оно что-то измеряет, но стрелка живет своей жизнью. Приложение бесполезное.

### 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.

### 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.

### 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.

### 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.

### 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.

### 5/5 — 5s вылетает

*2019-12-26, version 1.1*

Вылетает после измерения на 5s Исправте пожалуйста!

## Frequently asked questions about Illuminance Pulsation Meter

### What is Illuminance Pulsation Meter used for?

Illuminance Pulsation Meter helps you measure the ripple coefficient of light sources, such as lamps and screens. This allows you to identify potential screen flicker that could contribute to eye fatigue and discomfort.

### How accurate are the measurements from Illuminance Pulsation Meter?

The readings are not 100% reliable. The average error can exceed 10%, depending on the light source and pulsation frequency. For best results, ensure your phone is held steady during measurements.

### What types of light sources can Illuminance Pulsation Meter test?

The app can measure the ripple coefficient of various light sources, including LED, halogen, fluorescent, and incandescent lamps, as well as LCD and LED monitors and TVs.

### How do I use Illuminance Pulsation Meter to take a measurement?

Simply bring your phone close to the light source you want to test and press the start button. The results will update in real-time, with an arrow indicating the ripple factor and a scale filling from green to red.

### Does Illuminance Pulsation Meter have ads?

No, Illuminance Pulsation Meter does not contain advertisements. It is a paid application designed for a focused user experience.

### What devices is Illuminance Pulsation Meter compatible with?

Illuminance Pulsation Meter is available for iPhone and iPad devices. It is designed for iOS operating systems.

### How often is Illuminance Pulsation Meter updated?

The latest version of Illuminance Pulsation Meter is 1.3, last updated on January 23, 2026. Updates typically address performance improvements and compatibility.

### What is the age rating for Illuminance Pulsation Meter?

Illuminance Pulsation Meter has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

## Version history (last 4 releases)

### 1.3 — 2026-01-23

Some bugs fixed.

### 1.2 — 2020-02-03

Some bugs fixed.

### 1.1 — 2019-09-25

Some bugs fixed.

### 1.0 — 2019-03-26

No release notes.

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## More apps by ALEXEY KOZLOV

- [Angle Meter 360](https://appshunter.io/ios/app/angle-meter-360/id1393860479)
- [Rocket Protector](https://appshunter.io/ios/app/rocket-protector/id1410179786)
- [Thermal Transmittance Calc](https://appshunter.io/ios/app/thermal-transmittance-calc/id1473745621)
- [MixArt Photo Editor](https://appshunter.io/ios/app/mixart-photo-editor/id1515137468)

All apps by ALEXEY KOZLOV: https://appshunter.io/developer/1393860478

## Related topics

[flicker test](https://appshunter.io/ios/topics/flicker-test) · [pulsoid](https://appshunter.io/ios/topics/pulsoid) · [flicker meter](https://appshunter.io/ios/topics/flicker-meter)

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*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.*