pitcher

pitcher changes the key of any song while the tempo stays exactly the same. Move music up or down by anything from a full octave to a single cent, find the key with the built-in tuner, practice with loops and slower speeds, and save the version you need as a file.

Made for singers who want a song in their range, players who need to match a recording or an instrument, and anyone learning a piece by ear.

Change the pitch

• Slide up or down on the screen and hear the change as the song plays.
• Step by 1, 10, or 100 cents, type an exact value, or snap to semitones.
• The interval is spelled out as you go, for example "up a minor third".

Find the key

• The tuner names the note at the playhead or at a bookmark, with its exact cents.
• Choose the note you want and apply the interval in one tap.

Practice

• Loops for the passages you work on, repeated one at a time or in sequence.
• Named bookmarks shown on the waveform.
• Play speed from half to double, without changing the pitch.
• Zoom the waveform, and let it follow the playhead.

Keep and save

• Keep the pitches you like on a shelf and switch between them with a tap.
• Kept pitches are prepared in the background, so saving is quick.
• Save or share as WAV, MP3, M4A, or Opus, the whole song or only your loops, at normal speed or at your practice speed.
• Files sound exactly like the preview, because both use the same engine.

Private by design

• No network permission. Nothing leaves your phone.
• No account, no ads, no tracking.
• Import audio or video files, or share one in from another app.

A short guided tour shows every control the first time you open a song.

pitcher is free and open source software (GPL-3.0).