Blacklight UV Light Simulator

Turn your screen into a blacklight — or flip on a real flashlight. This UV light simulator creates a glowing purple-blue blacklight effect for parties, Halloween, neon nights, and photo backdrops, now with party strobes, a six-channel disco floor, 20 live animated shader patterns, and a genuine LED flashlight with adjustable strobe. The blacklight, party, disco, and shader effects are a screen-based visual simulator for fun: phone screens can't emit real ultraviolet light, so they don't replace a real UV lamp. The flashlight is different: it uses your phone's actual LED flash, for real light (on devices that have one).

Open the app and pick a mode: fill your screen with a deep purple-blue glow for the classic black light look, start a party light show, watch the disco floor shift through colour, flip through animated shader patterns, or switch on the real flashlight, strobe included. All without any extra hardware.

Features

- One-tap glow: 12 blacklight scenes plus 8 adjustable lamp presets with live sliders
- Prismatic Party & Disco: beam shows and a six-channel colour floor
- Shader Gallery: 20 live, GPU-rendered animated patterns
- Real flashlight: your device's LED flash as a torch, with adjustable strobe speed
- Quality settings: balance brightness and smoothness for your phone
- Optional sound and vibration feedback
- Available in English, Spanish, French, and German
- Fits any screen size, phone or tablet
- Lightweight, fast to open, works offline

Ways to Use It

- Party and rave-style lighting for glow-themed get-togethers
- Halloween decorations and spooky scenes
- Neon-night photo and video backdrops
- A real flashlight for everyday use, with a strobe option
- Playful fun with friends and family, kids and adults alike

Good to Know

This is primarily an entertainment app. The blacklight, party, disco, and shader effects simulate light on your screen: they can't sanitize, detect stains, or check documents the way a real UV lamp can. The flashlight feature uses real hardware, not a simulation, and needs a device with an LED flash. Some modes use fast-flashing strobe effects. If you or anyone nearby is sensitive to flashing lights, including with photosensitive epilepsy, avoid the strobe and disco modes. Free, with no account needed.

Privacy

The app doesn't access your microphone or location, and it doesn't capture photos or video: the flashlight only controls your device's torch hardware directly. The app shows ads, which may use your device's advertising identifier to help deliver and measure them. Your sound, vibration, theme, language, and quality settings stay on your device.

Download the blacklight UV light simulator and bring the glow, and a real flashlight, to your next party, Halloween night, or neon-themed photo.

Recent changes:
Improved UI design