Core Tattva

VOID

Tuner & Learn · iOS & Android

Your instrument deserves a tuner that's actually worthy of it.

Void is a precision chromatic tuner and music learning toolkit with a futuristic UI that gets out of your way. Tune anything, train your ear, and build real musical knowledge — all offline.

Live on Google Play · App Store coming soon

Download on the

App Store

Soon

Get it on

Google Play

Live

Core Tools

Everything a musician needs

One app. Tuner, trainer, tone generator — all built with precision and zero bloat.

Chromatic Tuner

High-precision real-time tuner that hears your instrument and locks in fast. Works on every string, every note, every instrument.

Strobe Tuner

Studio-grade strobe display for when precision really matters. See cent deviations visually — ideal for intonation work and setup.

Tone Generator

Generate any reference pitch to tune against, train relative pitch, or set a drone for practice. Select any note and octave.

Interval Training

Identify melodic and harmonic intervals by ear. Progressive ear training that builds real musical instinct over time.

Pitch Training

Develop your ability to recognise and reproduce specific pitches. Exercises for beginners through to advanced musicians.

Chord Library

Comprehensive chord diagrams for guitar and ukulele. Every voicing, every position — from open chords to advanced jazz shapes.

Vocal Pitch Learning

Hear a pitch, sing it back — Void tells you how close you are in real time. Build your ear and voice simultaneously.

Tunings

Every instrument. Every tuning.

From standard open chords to esoteric scordatura — Void has the preset ready.

Guitar

Standard (EADGBE)
Drop D
DADGAD
Open G
Open D
Open E
Open A
Half Step Down
Full Step Down
NST — Robert Fripp's New Standard
Nashville Tuning
Baritone

Bass

Standard 4-string (EADG)
5-string (BEADG)
6-string
Drop D
Half Step Down

Ukulele

Standard (GCEA)
Low G
D Tuning (ADF♯B)
Baritone (DGBE)

Violin / Viola / Cello / Double Bass

Standard orchestral tunings
Alternative scordatura tunings

Banjo

Open G
Open D
Double C
Sawmill
And many more

Mandolin

Standard (GDAE)
Cross-tuning
Open D

Harp & More

Chromatic mode covers any instrument, any custom tuning

Microphone stays on your device

Void uses your microphone on-device only to detect pitch in real time. No audio is ever recorded, stored, or sent anywhere. No account, no analytics, no ads — ever. Everything happens locally and privately.

Read the full privacy policy

Questions or feedback?

Want early access, have a tuning preset request, or just want to say hi? We'd love to hear from you.

dev@coretattva.com