Comparison

Flicker Meter for Light vs OSpectrometer

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

Head to head
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!

About

OSpectrometer

This app uses your device's camera and screen to perform basic optical spectroscopy. Analyze the visible light spectrum of objects, map light wavelengths to RGB values, and save or share your findings. It functions offline without external hardware.

Highlights
  • Visible light spectrum analysis
  • RGB color value mapping
  • Wavelength selection and scanning
  • Front camera reflection sensing
  • Save and share results
  • Offline functionality
Features
Read full description

Optical spectroscopy in the visible light spectrum is a commonly used tool in different fields such as health, manufacturing, art, and forensic research. OSpectrometer implements basic spectrometer functions using the built-in camera and screen without requiring external devices or programs. - Visible light spectrum is transformed and mapped to a function that generates RGB (Red Green Blue) color values - A specific light wavelength can be selected and used to illuminate a desired target (i.e., close to the screen) - The whole spectrum or a specific part of the spectrum can be selected and scanned - Front camera is used to sense the reflection from the target object - Consistent and repeatable reflection/absorption amplitude with respect to the color spectrum - The result can be saved and shared - Works offline, no need to connect to any network or internet Privacy-policy: https://software.nanorescenter.com/osprectrometer-privacy-policy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Flicker Meter for Light4 screens
OSpectrometer4 screens

Verdict

The call

The clearest difference is review sentiment: Flicker Meter for Light at 62% against OSpectrometer's 0%. Flicker Meter for Light also leads on rating (4.6 vs 2.0) and ratings volume (48 vs 4). OSpectrometer's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, in-app purchases and monetization model 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

Both are free to download. Flicker Meter for Light sells 4 in-app purchases, starting at $0.99 per month and OSpectrometer sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Flicker Meter for Light holds the better App Store score, 4.6 against 2.0. That said, the two scores are not equally well evidenced: Flicker Meter for Light has 48 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 62% of Flicker Meter for Light's written reviews are positive against 0% of OSpectrometer's.

UpkeepUpdate frequency

Flicker Meter for Light ships an update every 2 months, OSpectrometer every 2 weeks. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
Flicker Meter for Light versus OSpectrometer: the parameters behind the verdict, then further details
ParameterFlicker Meter for LightOSpectrometer
PriceFreeFree
Rating4.6 (48 ratings) — better2.0 (4 ratings)
Positive reviews62.1% of reviews — better0.0% of reviews
Number of ratings48 — better4
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size43 MB71 MB
Age rating4+4+
DeveloperContechity ABNANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI

Customer experience

Flicker Meter for Light

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

OSpectrometer

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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
2 purchases

OSpectrometer

Subscriptions2
  • month3 Days trial$2.991 Month
  • year3 Days trial$9.991 Year

Questions

Is Flicker Meter for Light free?
Flicker Meter for Light is free to download, with in-app purchases available.
Is OSpectrometer free?
OSpectrometer is free to download, with in-app purchases available.
Which has better reviews, Flicker Meter for Light or OSpectrometer?
Flicker Meter for Light is rated higher. Flicker Meter for Light averages 4.6 out of 5 from 48 ratings, while OSpectrometer averages 2.0 from 4 ratings.
Do Flicker Meter for Light or OSpectrometer have ads?
Neither Flicker Meter for Light nor OSpectrometer shows ads.
Which is updated more often, Flicker Meter for Light or OSpectrometer?
Flicker Meter for Light ships an update every 2 months, and OSpectrometer every 2 weeks. Most recently, Flicker Meter for Light was updated on October 13, 2026 and OSpectrometer on October 15, 2026.

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