Developer & Maker

Black.X Works

Independent developer building fast, private software across mobile, web, and desktop. Apps, stories, tools, and websites. All in one place.

8 Projects
1 Android app
5 Tools
0 Ads
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Featured app

Liner

Local music. Synced lyrics. Yours.

Get on Google Play
Fiction VStories Portfolio Black.X Windows PCfix VRChat VRCFX Unity tool Vtool Windows Pngup Windows USBFix
Android Mobile Web Desktop Unity Windows Offline-first No tracking
01 Android

Apps

Local-first Android software. Your files stay on your phone. No accounts, no ads, no tracking.

Android · v1.3.7

Liner

Local music. Synced lyrics. Yours.

Liner on Google Play is the listing under the developer name Black.X. Black.X does not own any other app named Liner. Apps named Liner anywhere else are not related to Black.X, and Black.X does not contribute to them in any way.

An Android local music player for the songs already on your phone. It does not stream. It does not need an account. When a track has timed lyrics, the words scroll with the music and the current line stays highlighted.

Android Offline-first Synced lyrics No ads No tracking

Library

  • Scans MP3, FLAC, M4A, WAV, AAC, Opus, OGG, WebM, M4B and more
  • Search, sort, shuffle, recently added
  • Playlists you create and manage
  • Duplicate finder and cover tools

Playback

  • Background play with media controls
  • Mini player while you browse — swipe it away to stop
  • Equalizer and optional skip silence
  • Headset and Bluetooth handled cleanly

Lyrics

  • Timed lyrics that follow the song
  • From tags, .lrc files, or local cache
  • Choose from multiple online matches, then saved offline
  • Import, paste, or embed lyrics into files

Privacy

  • No account or sign-up
  • No ads, analytics, or ad IDs
  • Library stays on your device
  • Internet only for optional lookups; sharing stays on local Wi-Fi

Inside the app

Onboarding Library Mini player Now Playing Playlists Settings

FAQ

Does it need internet?

No for playing your files. Only if you turn on online lyrics or cover lookup. Share library uses local Wi-Fi only when you start it.

Where does my music live?

On your phone. Liner reads it. It does not host a cloud library.

Ads or account?

Neither. No ads. No sign-up.

What formats?

MP3, FLAC, M4A, WAV, AAC, Opus, OGG, WebM, and M4B via Android media.

What languages?

English, Afrikaans, Albanian, Amharic, Armenian, Azerbaijani, Basque, Indonesian, Russian, and Uzbek. Switch anytime in Settings.

Get on Google Play Privacy Policy
02 Live now

Websites

Full websites you can visit right now. Dark fiction and developer work, hosted and free to read.

Website

VStories

Dark fiction by VIRUS. Demon pacts, whispers in the mind, and shadows that count in the dark. Every story is complete with full chapters. Free to read.

Dark fiction Horror Free
Novel | 20 chapters Road To Hell A demon pact, devastating consequences, and the enduring power of hope.
Novel | 22 chapters Hell of the Mind Whispers promise clarity and power. Every act of vengeance costs a piece of soul.
Thriller | 20 chapters The Killer Tally marks on windows and a voice counting from the shadows at 2 a.m.
Read stories
Website

Black.X

The developer portfolio. Privacy-first software built for real people, not data harvesters.

  • Mobile, web, and desktop projects
  • Offline-first where it matters
  • No ads, no tracking, ever
Portfolio Privacy
Visit site
03 Software

Tools & Software

Free utilities built for real workflows. Windows tools, VRChat apps, avatar prep, and desktop overlays.

Windows App

VRCFX

A Windows desktop app for VRChat players. Track friends, browse worlds, switch avatars, and see who is in your room while VRChat runs beside you.

  • Friends online, current world, notes, and cleanup
  • Worlds, live instances, favorites, and home world
  • Live radar from local VRChat logs on your PC
  • Alerts, themes, EN/AR/ES/FR, Windows installer
Windows VRChat Free
Download GitHub
Windows App

PCfix

Windows toolkit to optimize, clean, repair, and diagnose. Registry, services, network, debloat, and a built-in BSOD analyzer in one dark UI.

  • Smart Scan, tweaks, boost, and startup manager
  • SFC, DISM, CHKDSK, and memory diagnostic
  • BSOD Analyzer with crash history and dumps
  • Installer and portable builds for Windows 10/11
Windows Python Free
View on GitHub
Unity Tool

Vtool

Avatar Auto-Fixer Pro. Pre-upload checks and safe fixes for VRChat avatars in Unity. Catch blockers before you upload.

  • Check tab: blockers, warnings, performance snapshot
  • Fix tab: safe one-click SDK error fixes with rollback
  • Textures tab: cap sizes and prep for Quest
  • Install via VRChat Creator Companion (VCC)
Unity VRChat SDK VCC Free
View on GitHub
Windows App

Pngup

Pin a photo on your Windows desktop and work behind it. A floating overlay that stays out of your way.

  • Always on top with click-through mode
  • Resize, opacity, and draggable settings panel
  • Dark and light themes, 6 languages
  • Tray shortcuts and global hotkeys
Windows Tauri Free
View on GitHub
Windows App

USBFix

Repair stubborn USB sticks when Disk Management and Format fail. One elevated EXE for write-protect, RAW, and 0-byte drives.

  • Quick Fix: clear write protect, letter, format, rebuild
  • Drive discovery with size, VID/PID, and health chips
  • Capacity probe catches fake or failing flash
  • Honest post-repair write test — no installer needed
Windows USB repair Free
View on GitHub
04 Who builds this

About Black.X

Built by DARKSIDE957

Black.X is me. DARKSIDE957. One person. No team. No company. No startup energy.

I build private software for Android, Windows, web, and Unity, and dark fiction when the mood hits. Different surfaces. Same rule: your stuff stays yours.

If it is under Black.X, I shipped it. If it is rough, that is on me too. My apps are not perfect. I am still trying, still fixing, still making them better.

A lot of free apps make money from your data, ads, and tracking. Black.X does not. I do not sell your info. I do not put trackers in my work. Your files stay on your device.

Everything here stays free on purpose. Paywalls change the work. Download it. Use it. Delete it. Stars help. Support helps. Neither is required.

Funny part: I build a lot of this on a broken laptop. Do not worry. The SSD is safe. If the machine dies, I will find another way. The work does not stop because the hardware gets dramatic.

Available for commissions: if you want to commission me for building a website, an Android app, a Windows app, or anything custom, reach out on Discord (_omv) or email me at blackx998x@gmail.com.

Indie dev Privacy first Still improving Free tools Free fiction Commissions open
05 How it works

Principles

Every project follows the same rules. No exceptions.

Privacy

No tracking scripts, no analytics farms. Your data stays yours.

No ads

No banners, no popups, no sponsored content. Ever.

Free tools

Tools are free to download on GitHub. No paywalls, no upsells.

06 Commission

Custom work & commissions

Need a website, an Android app, a Windows app, or custom software? I build fast, private solutions for any platform.

Websites, Android apps, Windows utilities, and more

If you want to commission me for building a website, an Android app, a Windows app, or anything custom, contact me on Discord (_omv) or email me at blackx998x@gmail.com.

Discord _omv
Email blackx998x@gmail.com
Email me

Like what you see?

Star a repo on GitHub or support on Ko-fi. Every bit helps keep projects free.

GitHub Ko-fi