Centerline Get Centerline

Android/iPhone/Mac

Centerline

Tune the note you play.

Free Chromatic, 62–800 Hz. See flat or sharp.

Get it onGoogle Play Download on theApp Store
Centerline's Chromatic Simple display showing C sharp 3 in tune
  • No ads
  • No account
  • Works offline
  • One-time unlock

Views

Chromatic includes Simple, Trail, Strobe, Workbench. Guitar adds All strings and Guitar: six free views.

Chromatic Simple display showing C sharp 3 in tune
ChromaticNearest note, 62–800 Hz
Chromatic Trail display showing six seconds of C sharp 3 pitch history
TrailSix seconds of history
Guitar All strings display showing four of six strings read
GuitarSix-string progress

Centerline Complete

A tuner isn't a subscription.

Chromatic tuning and every display are free. Pay once for alternates, custom six-string tunings, capo, A4 (432–446 Hz), reference tones.

No trial. No recurring charge. Your store shows the local price.

Private by construction

Audio stays on your device.

Live pitch stays on device. Tuning works offline. No account or ads. Usage analytics is optional.

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Tune, then play.

Also on Mac

Get it onGoogle Play Download on theApp Store