Comparison

LightSpectrum Pro vs Flicker Meter for Light

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

LightSpectrum Pro

Measure light source color temperature and spectrum accurately without expensive equipment. View the color spectrum from 360nm to 800nm, and analyze the white point on the CIE 1931 diagram. Overlay filtered wavelengths on camera images to see frequency reflections and intensity.

Highlights
  • Color temperature measurement
  • Color spectrum analysis (360nm-800nm)
  • CIE 1931 white point display
  • Wavelength filtering and overlay
  • High accuracy compared to professional devices
Features
Currently charting
Read full description

With LightSpectrumPro EVO you can measure the color temperature of a light source without having to spend hundreds of dollars on professional devices. LightSpectrumPro EVO has an error of 2 - 8% compared to existing professional products on the market. in addition to the color temperature measurement in Kelvin, LightSpectrumPro EVO allows you to view the color spectrum of the light being examined with a band ranging from 360nm to 800nm. in addition to the spectrum it is possible to display the position of the white point on the CIE 1931 diagram and to apply a filter for wavelengths to display in overlay on the image captured by the cameras which elements reflect a specific frequency and with what intensity.

About

Flicker Meter for Light

Detect and measure invisible high-frequency flickering in LED lights and screens that can cause eye strain and headaches. Find flicker-free alternatives to improve your comfort and health.

Highlights
  • Detect invisible high-frequency flickering
  • Measure flicker intensity (%)
  • Measure flicker frequency (Hz)
  • Identify flicker-free light sources
  • Easy-to-use interface
  • Instant results
Features
Read full description

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 • Bird owners monitoring aviary lighting (birds are highly sensitive to flicker) 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!

Screenshots

LightSpectrum Pro4 screens
Flicker Meter for Light4 screens

Verdict

The call

The clearest difference is price: Flicker Meter for Light at Free against LightSpectrum Pro's $1.99. Flicker Meter for Light also leads on rating (4.6 vs 4.1) and review sentiment (62% vs 28%). LightSpectrum Pro's advantage is in-app purchases (none vs 4) and chart position (#38 vs unranked). On ratings volume, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Flicker Meter for Light is free to download; LightSpectrum Pro costs $1.99 up front. Flicker Meter for Light sells 4 in-app purchases, starting at $0.99 per month. LightSpectrum Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flicker Meter for Light holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 39 and 48 respectively. Written reviews point the same way: 28% of LightSpectrum Pro's written reviews are positive against 62% of Flicker Meter for Light's.

UpkeepUpdate frequency

LightSpectrum Pro ships an update every 3 months, Flicker Meter for Light every 2 months. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

Scorecard6 real differences · 5 level
LightSpectrum Pro versus Flicker Meter for Light: the parameters behind the verdict, then further details
ParameterLightSpectrum ProFlicker Meter for Light
Price$1.99Free — better
Rating4.1 (39 ratings)4.6 (48 ratings) — better
Positive reviews28.5% of reviews62.1% of reviews — better
Number of ratings3948 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#38 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size88 MB43 MB
Age rating4+4+
DeveloperAM PowerSoftwareContechity AB

Customer experience

LightSpectrum Pro

All ratings39 ratings
Positive76.9%
Neutral2.6%
Negative20.5%
Written reviews172 reviews
Positive28.5%
Neutral5.8%
Negative65.7%

Flicker Meter for Light

All ratings48 ratings
Positive87.5%
Neutral4.2%
Negative8.3%
Written reviews29 reviews
Positive62.1%
Neutral3.4%
Negative34.5%

Bugs and requests

LightSpectrum Pro

Reported bugs

11 issues
  • App crashes on startup or during use
  • Camera feed not accessible or showing red X icon
  • Screen blinking/flashing on first launch
  • UI elements cut off on larger screens
  • Buttons unresponsive or sticky
Show 6 more
  • App freezes and cannot be exited
  • Black screen on launch
  • Inconsistent readings that change rapidly
  • App stuck on opening screen
  • Camera focus issues on iPhone X and newer models
  • Incompatibility with iOS 5, 6, and newer iPhone models

Requested features

11 requests
  • Spot metering with crosshairs or target reticle
  • Direct DUV (Delta uv) display calculation
  • Flicker detection for light sources
  • Calibration function for improved accuracy
  • Support for fluorescent light preset adjustments
Show 6 more
  • Tap-to-focus camera control
  • Landscape orientation support
  • Ability to disable tutorial tips
  • Screenshot capability in landscape mode
  • Better documentation and user guide
  • Device compatibility information in app store listing

Flicker Meter for Light

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LightSpectrum Pro

No in-app purchases

4 purchases

Flicker Meter for Light

Subscriptions2
  • Full access14 Days trial$0.991 Month
  • Full access$4.991 Year
One-time2
  • Full access$6.99
  • Full access$9.99

Questions

Is LightSpectrum Pro free?
LightSpectrum Pro costs $1.99, with no in-app purchases.
Is Flicker Meter for Light free?
Flicker Meter for Light is free to download, with in-app purchases available.
Which has better reviews, LightSpectrum Pro or Flicker Meter for Light?
Flicker Meter for Light is rated higher. LightSpectrum Pro averages 4.1 out of 5 from 39 ratings, while Flicker Meter for Light averages 4.6 from 48 ratings.
Do LightSpectrum Pro or Flicker Meter for Light have ads?
Neither LightSpectrum Pro nor Flicker Meter for Light shows ads.
Which is updated more often, LightSpectrum Pro or Flicker Meter for Light?
LightSpectrum Pro ships an update every 3 months, and Flicker Meter for Light every 2 months. Most recently, LightSpectrum Pro was updated on October 14, 2026 and Flicker Meter for Light on October 17, 2026.

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