Black Light
Overview
The application Black Light, developed by Shiny Lights, occupies a niche in the mobile utility market as an atmospheric lighting simulator. At its core, the software is designed to transform the smartphone display into a visual representation of a black light (ultraviolet) environment. It is analytically vital to distinguish between functional ultraviolet hardware and software simulation; standard smartphone displays, whether LCD or OLED, are physically incapable of emitting radiation in the ultraviolet spectrum (100nm to 400nm). Consequently, this application functions as a visual entertainment tool that mimics the aesthetic of UV light by maximizing the emission of high-energy visible (HEV) blue and deep purple light.
The technical architecture of the application allows for significant user control over the output parameters. Users can adjust the "Tone" of the color, ranging across various deep purple and violet hues, to match specific ambient needs. Furthermore, the app provides a brightness override feature that pushes the display to its maximum luminance to create a "powerful radiant effect" in dark environments. This makes the app particularly popular for creating ambient moods for photography, social gatherings, or as a creative night light.
Insightfully, the application has found an unexpected use case in the social verification niche. Some users attempt to use the high-intensity purple light to reveal fluorescent materials on surfaces or currency. While the app does not emit true UV-A rays, the intensity of the purple light can sometimes cause specific highly-fluorescent materials to react slightly, though it is not a reliable method for professional hygiene or security inspections. The November 2024 update (version 3.0.0) focused on UI modernization and reducing the "time-to-light" by streamlining the splash screen.
Pros & Cons
Chromatic Customization: Offers a wide spectrum of deep purple and violet variations to simulate different intensities of black light.
Brightness Optimization: Automatically overrides system settings to maximize screen output for a more vibrant glow.
Integrated Timer: Features a configurable timer to keep the screen active for specific durations, preventing automatic sleep modes.
Minimalist Resource Footprint: The application is extremely lightweight and does not require extensive CPU or RAM resources.
Atmospheric Utility: Highly effective for creating neon-style ambient lighting for aesthetic photography and themed events.
User-Friendly Interface: Employs a single-tap activation system that makes it accessible to all age groups.
- ✕
No Functional UV Output: Incapable of producing actual ultraviolet radiation for sterilization or security tasks.
- ✕
High Power Consumption: Running the display at maximum brightness for extended periods leads to rapid battery depletion.
- ✕
Limited Utility: Beyond visual entertainment and ambient lighting, the app lacks practical functional applications.
Download
Get it on Google Play 
Get it on App Store FAQs
Can this app detect counterfeit currency?
No, standard phone screens cannot produce the UV-A light required to activate the security threads in bank notes.
Is it safe to use this light for long periods?
Yes, because it is only visible purple light and not actual UV radiation, it is safe, though it may cause eye fatigue if viewed directly in the dark.
Does the app use the camera flash?
Most versions of com.chic.blacklight focus on the screen color, as the camera's LED is usually a white light that cannot be modified to UV via software.
Can it show stains on clothes or sheets?
While some organic substances may react slightly to intense blue light, the app is not a professional-grade detection tool.
Is there a way to take photos with the light on?
Currently, the app primarily acts as a light source; users often use a second device to take photos using the first device as the "black light" source.
Hot Reviews
Users frequently praise the app for its ability to create a "party vibe" in small rooms, noting that the deep purple tones are accurately represented.
Critical but fair reviews note that while the app is "just for fun," the developers are honest about the fact that it is a simulator and not a real UV lamp.
One innovative review mentioned using the app to read highlighted text in low-light environments, finding the purple light less jarring than a white flashlight.