Comparison

Flicker Meter for Light vs Rival Aqua

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

Rival Aqua

Features
Read full description

Rival Aqua — easy control of your Rival Aqua aquarium LED light right from your phone. • Adjust the brightness of each channel: white, red, green, blue • Ready-made light presets: Day, Night and many more • Manual mode with smooth adjustment • Automatic discovery of the controller on your Wi-Fi network • Multiple lights in one app • Ukrainian and English languages Premium (one-time purchase) unlocks all presets: Sunset, Reef, sea (Deep Sea, Lagoon, Amethyst) and extra, with exact values and spectrum charts.

Screenshots

Flicker Meter for Light4 screens
Rival Aqua3 screens

Verdict

The call

The clearest difference is update cadence: Rival Aqua at weekly against Flicker Meter for Light's every 2 months. Flicker Meter for Light's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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 Rival Aqua sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Flicker Meter for Light ships an update every 2 months, Rival Aqua weekly. The most recent releases landed on October 27, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
Flicker Meter for Light versus Rival Aqua: the parameters behind the verdict, then further details
ParameterFlicker Meter for LightRival Aqua
PriceFreeFree
Rating4.6 (54 ratings) — better—
Positive reviews62.1% of reviews—
Number of ratings54 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size43 MB1 MB
Age rating4+4+
DeveloperContechity ABMakarov Anton

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
1 purchases

Rival Aqua

One-time1
  • Premium$0.99

Questions

Is Flicker Meter for Light free?
Flicker Meter for Light is free to download, with in-app purchases available.
Is Rival Aqua free?
Rival Aqua is free to download, with in-app purchases available.
Do Flicker Meter for Light or Rival Aqua have ads?
Neither Flicker Meter for Light nor Rival Aqua shows ads.
Which is updated more often, Flicker Meter for Light or Rival Aqua?
Flicker Meter for Light ships an update every 2 months, and Rival Aqua weekly. Most recently, Flicker Meter for Light was updated on October 27, 2026 and Rival Aqua on October 2, 2026.

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