Software that does
the hard part for you.

Deus Core is a studio building small, focused apps that make everyday things easier — music tools, games, and handy utilities. Simple to buy, simple to use, one download each.

See our products

Products

What we make

Small, focused apps that each do one thing well — no clutter.

GN Pianist

GN Pianist

Windows app

Turns piano videos and MIDI files into playable sheets, then plays them for you on any QWERTY virtual piano — Roblox, virtualpiano.net, and more.

View GN Pianist →

Karaoke Queue!

Web app

A karaoke night without the fuss. Put it on the TV, guests scan a QR code and add songs from their phones, and everyone can see who's singing next. Nothing to install.

Free: up to 25 guests · 5 songs in the queue at a time
Pro: 40 guests · 200 songs · your own .mp4 library · See Pro
Open Karaoke Queue →
✦

More coming

In the works

New Deus Core tools are in development. Check back soon.

Coming soon

About

Deus Core

Deus Core is a one-person studio turning ideas into focused, affordable apps that each do one thing well. It started with GN Pianist, then came Karaoke Queue! — and there's plenty more on the way, from games to everyday tools.