Comparison

Flicker Insight vs Cuepact Clock

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

Head to head
About

Flicker Insight

Detects imperceptible light flicker from various sources like screens and bulbs that can cause eye strain. Offers detailed metrics, ambient light and color temperature estimates, and generates exportable reports. Prioritizes user privacy with offline functionality and no ads.

Highlights
  • Quick flicker test with camera
  • Eye comfort assessment
  • Detailed flicker metrics
  • Ambient illuminance estimate
  • Color temperature estimate
  • PDF report generation
  • Offline functionality
Features
Read full description

Desk lamps, eye-care lamps, LED bulbs, computer monitors, and smartphone screens may appear steady, while actually producing brightness fluctuations—flicker—that are difficult to detect with the naked eye. Prolonged exposure to flickering light may contribute to eye fatigue, eye strain, headaches, or even dizziness. This app helps you detect flicker that may otherwise go unnoticed. 【QUICK FLICKER TEST】 Point your camera at a light source or screen. The app collects adaptive samples at multiple shutter speeds for about 3 seconds and continuously updates the screening result. • Screening result: Flicker detected / No significant flicker detected / Unable to determine • Eye comfort assessment: Low, medium, or high risk based on the measured flicker level • Detailed metrics: Flicker index, modulation depth, dominant frequency, and brightness waveform 【MORE THAN FLICKER DETECTION】 • Ambient illuminance estimate: Provides an approximate brightness range to help you assess whether the environment is suitable for visual tasks. • Color temperature estimate: Provides an approximate color temperature for reference. 【EXPORT AND SHARE】 Generate a PDF report containing the waveform, frequency spectrum, light source image, and test conclusion, or export the raw data as a CSV file. 【PRIVACY FIRST, FULLY OFFLINE】 • No ads, no analytics SDKs, and no account required. • The app does not actively connect to the internet. All data remains on your device. • Videos created during measurement are processed temporarily and deleted immediately after analysis. Only measurement results and notes are retained. • You can clear all locally stored data at any time from Settings. 【AVAILABLE IN 12 LANGUAGES】 Simplified Chinese, Traditional Chinese, English, Japanese, Korean, French, German, Spanish, Portuguese, Russian, Arabic, and Hindi. 【IMPORTANT NOTICE】 This app provides consumer-grade screening of lighting conditions. Results may be affected by your phone camera’s frame rate, exposure, rolling shutter, and ambient light. It is not a substitute for professional photometric testing, standards compliance certification, or medical diagnosis. Privacy Policy: https://wwmmkk.github.io/Flicker-Insight/Privacy%20Policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Cuepact Clock

Read full description

A free fullscreen clock for live productions. Made to do one thing well: show the time clearly. Cuepact Clock gives stage managers, show callers and production crews a clear view of local time on iPhone and iPad. Open the app and the clock is ready. Tap the clock to cycle through four views: • White on black, with seconds • White on black, without seconds • Black on white, with seconds • Black on white, without seconds Large, aligned digits make the 24-hour display easy to read. The clock fills the available screen space, adapts to portrait, landscape and resizable windows, and keeps the screen awake while the app is active. On iPhone Duo, a horizontal fold moves the clock to the upper screen and leaves the lower screen black. Fully open, the clock uses all available space. The layout adapts automatically, without extra settings. There are no settings or accounts, and the clock works offline. A short tip explains the tap gesture on first use. The clock follows the time and time zone set on your device. Touch and hold the clock to open a centered menu with Cuepact for Mac, help, privacy and terms. The startup card links to cuepact.com and closes automatically after five seconds. Support: info@cuepact.com

Screenshots

Flicker Insight4 screens
Cuepact Clock4 screens

Verdict

The call

The clearest difference is price: Cuepact Clock at Free against Flicker Insight's $0.99. Cuepact Clock also leads on in-app purchases (none vs 2) and device support (4 vs 1). On update cadence and ads 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

Cuepact Clock is free to download; Flicker Insight costs $0.99 up front. Flicker Insight sells 2 one-off in-app purchases. Cuepact Clock asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 6 level
Flicker Insight versus Cuepact Clock: the parameters behind the verdict, then further details
ParameterFlicker InsightCuepact Clock
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhoneiPhone, iPad, iPod, Apple TV — better
Requires iOS18.015.0 — better
Further details — not scored
Size212 MB2 MB
Age rating4+4+
Developer名楷 王Arthur Petri

In-app purchases

2 purchases

Flicker Insight

One-time2
  • A Popsicle$0.99
  • A Coffee$2.99
None

Cuepact Clock

No in-app purchases

Questions

Is Flicker Insight free?
Flicker Insight costs $0.99, and also offers in-app purchases.
Is Cuepact Clock free?
Cuepact Clock is free to download, with no in-app purchases.
Do Flicker Insight or Cuepact Clock have ads?
Neither Flicker Insight nor Cuepact Clock shows ads.
Which is updated more often, Flicker Insight or Cuepact Clock?
Flicker Insight ships an update every 2 days, and Cuepact Clock every 2 days. Most recently, Flicker Insight was updated on November 10, 2026 and Cuepact Clock on November 6, 2026.

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