Flicker Light vs Flicker Fusion
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flicker Light
This app simulates natural light patterns on your screen, mimicking the calming effect of 1/f fluctuations found in nature. It can be used as a gentle light source, with customizable settings and an automatic shut-off timer to conserve battery. The app also allows you to adjust the light's intensity and color.
- Reproduces natural flame sparkle (1/f fluctuation)
- Maximizes screen brightness
- Adjustable fluctuation strength and speed
- Hides buttons for a clean display
- Automatic turn-off timer
- Selectable light colors
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~ 1/f fluctuation reproduced on the whole screen ~ Even if there is no candle, this app gives out natural light for you. It reproduces 1/f fluctuation in nature, so it can be used as natural lighting. The light will be turned off automatically at the set time, so you will not waste the battery even if you use it when you go to bed. You can also use the iPhone in a lantern. Features: - Reproduce natural flame sparkle (1/f fluctuation) - Maximize screen brightness - Change the strength of fluctuation, speed etc - You can hide buttons - Automatically turn off at specified time - Color selectable
Flicker Fusion
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The Flicker Fusion administration application works in conjunction with the Lafayette Instrument Flicker Fusion system. The app allows an administrator to create/control a Critical Flicker Frequency (CFF) exam as well as store the results by examinee. The Flicker Fusion is for use in education and research and is not intended for medical or diagnostic purposes.
Screenshots
Verdict
The clearest difference is update cadence: Flicker Fusion at every 4 months against Flicker Light's every 19 months. Flicker Light's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Flicker Light ships an update every 19 months, Flicker Fusion every 4 months. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.
| Parameter | Flicker Light | Flicker Fusion |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 19 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 25 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryohei Minowa | Lafayette Instrument Company, Inc. |
In-app purchases
Flicker Light
No in-app purchases
Flicker Fusion
No in-app purchases
Questions
Is Flicker Light free?
Is Flicker Fusion free?
Do Flicker Light or Flicker Fusion have ads?
Which is updated more often, Flicker Light or Flicker Fusion?
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