# Headlight - Flicker Detector

> Detects and analyzes electric light flicker quality for health and well-being. (iPhone/iPad app by Ingrid Anne Hoegset.)

- Source: https://appshunter.io/ios/app/headlight-flicker-detector/id1528745497 (this page in markdown: same URL + `.md`)
- Developer: [Ingrid Anne Hoegset](https://appshunter.io/developer/1493176690)
- Category: Medical, Utilities
- Price: Free with in-app purchases
- Rating: 3.67/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 12+
- Requires: iOS 13.0 · 17 MB
- Languages: English
- Released: 2020-11-14
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/headlight-flicker-detector/id1528745497/reviews.md

## What is Headlight?

Did you know that flicker from bad electric lights could be exposing you to negative health effects like headaches and migraine?

Headlight allows you to test the quality of the electric lights in your surroundings and detect bad lighting. Any flicker is displayed visually on the home page and you are given the opportunity to examine the light closer. 

The app analyzes the flicker and flicker percentage of the light to determine a score for how good or bad the light is. This score is based on the limits used by the Institute of Electrical and Electronics Engineers. 

The app also provides tips on how to improve your lighting to improve your wellbeing.

## Key features

- Detects electric light flicker
- Analyzes flicker percentage
- Provides light quality score
- Offers lighting improvement tips
- Visual flicker display

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlimited Access | $2.99 | one-time |
| More spins | $0.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/headlight-flicker-detector/id1528745497/reviews.md

### 1/5 — Terrible

*2024-05-12*

I tested a few LEDs and kept getting 0 flicker 

Then I set up a PWM led and captured bars on the iPhone camera 

Then tried this app - it said 0 flicker 

This is a joke

### 5/5 — Outstanding

*2021-07-16*

I am so pleased to find that an app like this exists. The interface is great and I can finally stop having to delete slow motion videos of walls from my phone. 

My only “complaint” is that I wanted to buy the app immediately but had to use the trial scans up in order to do so. One scan was enough to secure my money. 

I would like to see an adjustment setting to change how sensitive it is to what is “bad” as I think I’m more sensitive than most and would like to be able to configure that in the app.

This is the easiest app purchase I’ve made in a long time.

### 5/5 — Finally, a flicker detector app that actually works!!

*2021-04-15*

I’ve been searching for an app like this for years, and I’m so glad someone finally (re)developed this app!

I am highly sensitive to the flicker/PWM strobing from (usually cheaper) light sources and try to avoid buying those bulbs as much as I can. Unfortunately, the flicker detector app that Viso Systems had developed was long discontinued in favor of their professional hardware that likely costs an arm and a leg. I had been using the slo-mo camera trick to detect flicker, but I’ve always wanted to see more information about the flicker, which seems simple enough to calculate with an app and has definitely been done before as shown by Viso.

I finally came across this app and it’s basically everything I had wanted and more. Not only does it detect flicker, it also shows the flicker frequency as well as the amount of actual flicker (which I had not previously considered). Best of all, it wraps all of this information in a simple yet highly informative and user friendly interface for those who aren’t aware of this phenomenon. Finally, it has a completely functional 6 test trial, after which I happily purchased the unlimited tests for $1.99. Thank you so much for developing this app!

## Frequently asked questions about Headlight

### What is Headlight?

Headlight is a medical app designed to test the quality of electric lights in your environment. It detects flickering and analyzes its percentage to provide a score based on IEEE standards, helping you understand potential negative health effects.

### How does Headlight detect flicker?

Headlight visually displays any detected flicker on its home page. It then analyzes the flicker and flicker percentage to determine a score indicating the light's quality, using limits set by the Institute of Electrical and Electronics Engineers.

### What are the health benefits of using Headlight?

Flicker from poor electric lights can contribute to headaches and migraines. By identifying and analyzing bad lighting, Headlight helps you take steps to improve your environment and potentially enhance your well-being.

### Does Headlight offer advice on improving lighting?

Yes, Headlight provides tips on how to improve your lighting conditions. These suggestions are aimed at helping users create a better and healthier lighting environment.

### What devices does Headlight support?

Headlight is available for iPhone and iPod devices. It is rated for ages 12 and up.

### How often is Headlight updated?

The latest version of Headlight is 1.4, and it was last updated on June 10, 2022. This indicates a moderate update frequency.

### What is the user rating for Headlight?

Headlight has a rating of 3.7 stars based on 3 user ratings. This suggests a mixed but generally positive reception among its users.

### Is Headlight free to download?

Yes, Headlight is free to download and use. It does offer in-app purchases, but the core functionality of detecting and analyzing light flicker is available for free.

## Version history (last 5 releases)

### 1.4 — 2022-06-10

Minor bug fixes

### 1.3 — 2021-01-19

Small design alterations that make the interface more user friendly.

### 1.2 — 2021-01-05

When analyzing a light, this new version will also gives an overview of the negative side effects that can result from the light.

### 1.1 — 2020-11-24

Minor changes in tips and design.

### 1.0 — 2020-11-15

No release notes.

## Apps similar to Headlight

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [GestaltMatcher](https://appshunter.io/ios/app/gestaltmatcher/id6502413806) | — | Free | Medical |
| [Concussion Management](https://appshunter.io/ios/app/concussion-management/id899322413) | 1.0 (1) | Free | Medical |
| [Relieve Migraine Pain Instantly With Great Massage](https://appshunter.io/ios/app/relieve-migraine-pain-instantly-with-great-massage/id808939429) | 2.0 (4) | Free | Medical |
| [U&DELIVER](https://appshunter.io/ios/app/u-and-deliver/id1504706762) | 5.0 (1) | Free | Medical |
| [Austin Assessment Family](https://appshunter.io/ios/app/austin-assessment-family/id6449723668) | — | Free | Medical |
| [Accident Concussion Scale (ACS)](https://appshunter.io/ios/app/accident-concussion-scale-acs/id1216312549) | — | $4.99 | Medical |

## More apps by Ingrid Anne Hoegset

- [Runsnapper](https://appshunter.io/ios/app/runsnapper/id1586860482)

All apps by Ingrid Anne Hoegset: https://appshunter.io/developer/1493176690

---

*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 2026-06-10.*