Tempo Loop Pro: Slow Downer

The ultimate slow downer for musicians: slow down music and video without changing pitch, transpose the key and loop the hard parts. Perfect for transcribing, learning songs by ear and practicing guitar, violin, piano, vocals or any instrument. Load any audio or video file and work on the piece like in a professional studio: slow it down to decode difficult passages, change the key to match your instrument or your voice, and loop exactly the bar you're struggling with — all with professional audio quality and no pitch distortion. SPEED WITHOUT CHANGING PITCH • From 25% to 200%, with high-quality processing • Perfect for transcribing solos, working up fast passages or ear training CHANGE THE KEY • Transpose in semitones (±12) without affecting speed • Fine tuning in cents (±50) for old recordings or non-standard tunings PRACTICE LOOPS • Press and drag on the waveform to create a loop instantly • A/B button to mark start and end while the music plays • Loop edges adjust precisely and snap to your markers UNLIMITED MARKERS • Mark the intro, the chorus, the solo... and jump between sections with a tap • Name them and move them with your finger WORKS WITH VIDEO TOO • Load videos and practice watching the performer's hands full screen • Tap the screen and the controls disappear so nothing gets in the way MADE FOR PRACTICE • Music keeps playing while you use other apps • Your library and markers are remembered between sessions: every song keeps its speed, key and loops • Organize your pieces into projects (band, choir, lessons...) • Built-in reference piano to check notes instantly • Open your audio and video files directly from other apps FREE FOREVER, WITH A 7-DAY FULL TRIAL Download it for free and use ALL features for 7 days. After that, the player, loops, markers and piano stay free forever; speed and pitch controls unlock with Tempo Loop Pro (monthly or yearly subscription, or a one-time lifetime purchase). Made by musicians, for musicians. If you study an instrument, sing in a choir, play in a band or are preparing an audition, Tempo Loop Pro is the tool you'll use every day.