Every feature of ToneBrowser

We separate time and pitch in the audio domain, so you can move the key without touching the tempo. Everything runs in real time, no buffering.

Low speeds stay clear, high speeds stay natural — no chipmunk effect. Great for copy work, language drilling and podcasts.

One-tap -5 / +5 semitone swaps. Dial the slider for fine-tuning.

The pitch you dial in is stored for that video. Reopen a song you practise often and it starts in your key — no hunting for the right semitone again.

Correct the gap between picture and sound on Bluetooth earbuds or speakers, anywhere from -0.9 to +0.9 seconds, until mouth and audio coincide.

Center-channel cancellation pulls the vocal out. Shift the pitch first, then strip the vocals, and you have a backing track in your key.

Two taps set the start and end points. Repeat forever.

Low, mid and high bands plus Bass / Vocal / Pop / Rock / Classical presets — match your earbuds or speakers.

Float the player while lyrics or chords live in another app. (Android)

Lyrics appear automatically for the current track, and your favorites are one tap away.

Soft blur on deep black — comfortable even through long practice sessions.