About this app
The Music Speed Changer** app allows you to easily change the playback speed and the pitch (key) of audio in real-time and independently from each other. The app also supports video (with zooming), subtitles (e.g. for karaoke), images (e.g. for scores), and text. Help: http://www.tequnique.com/apshelp Demo video**: https://www.youtube.com/watch?v=4EKstKlM6v0 ++ If you encounter stops during playback then increase the buffer size in the app's settings. ++ ## Features ## - Change pitch and tempo (speed, time-stretch) independently and in realtime using time and frequency domain algorithms. - Create range and position markers. - Loop and select regions. - Export/share and import songs with annotations (for instance for for sharing between music teachers and students). - Playlists. - Video view* with zoom support (for instance to get an exact view on a guitar player's hand). - Text view with auto scrolling and monospace font support (e.g. useful for tabs). - Subtitles view to show subtitles (for instance for karaoke). - Image view with zoom support (for instance for displaying scores in image format). - Volume amplification, and simple voice reduction. - Channel selection (left/right). - Import various formats including mp3, wav, m4a, ogg, aac, mp4 video,... - Export modified audio to wav, mp3, m4a, and flac. - Batch conversion of files. - Record audio directly in the app. - Frequency conversion (for instance to 432Hz). - Import audio from: media gallery, iOS "Open in" (supported by many apps, including DropBox), iTunes File Sharing (USB), and Wifi upload. * An iPhone 6 or better is recommend for the best video experience. The recommended video resolution is 720p. ** The old app name was "Audio Pitch and Speed Player" Use cases: music instrument training by adjusting tempo and pitch to anytune, transcription, karaoke, ...
Latest release
What’s New
- Bug fixes
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Oct 15, 2026 · 4:16 PM $6.99
Screenshots
