Slomo

Learn songs by ear faster on Mac

Slomo is a lightweight native Mac app for looping, slowing down, filtering and transposing songs. With controls fast enough to keep up with real practice sessions.

Features

See what you hear

Jump to the hard part instantly

Use the waveform overview to jump through a track quickly, then zoom in to place loops with precision.

Keep your hands on your instrument

Keyboard shortcuts give you fast control over playback, speed and loops without slowing down your practice.

Multiple Loops

Save every section worth repeating

Create multiple loops for intros, riffs, solos or transitions. All saved automatically with the song.

Resume where you left off

Open the track again and your saved loop markers are ready for the next session.

Tone & Pitch Filter

Hear the part you care about

Use simple filter controls to bring out the instrument you want to study and reduce distracting frequencies around it.

App Store Rating

4,8 / 5

Native mac OS. Built for Apple Silicon.

Featherweight install (~4.3 MB). Zero bloat.

Built for musicians. Built for your progress.

Intuitive controls for real practice sessions.

Download SLOMO on the Mac App Store

Keyboard Shortcuts

  • Play/Pause

    SPACE

  • Return play position

    ↩︎

  • Speed up/down

    ↑ or ↓

  • Scroll waveform

    Scroll Wheel

  • Zoom into waveform

    ⇧ + Scroll Wheel

  • Add loop

    ⌘ + A

  • Remove loop

    ⌘ + R

  • Remove All loops

    ⌥ + ⌘ + R

  • Next loop

    ⌘ + →

  • Last loop

    ⌘ + ←

  • Move loop

    ← or →

  • Gestures

    Swipe to scroll and Pinch to zoom the waveform

FAQ

Which file formats are supported?

Slomo handles .wav, .aiff, .mp3, .aac, .m4a, .m4b and .caf-files. Currently no .ogg, no .flac.

I cannot drag a song onto the app from iTunes

Be sure to use your local library. Tracks from an iTunes server or another computer's library can't be dragged anywhere.

Nope, I just can't open that song

It may be copy-protected, which Slomo does not support. This is uncommon today, but it can still happen with some purchased files.

Why is there only one track regardless of stereo or mono files?

The waveform shows the left channel in the upper half and the right channel in the lower half of the view.

I've found a bug. Shall I rate the app with one star?

Found a bug? Please contact us first — we actually read every message. And we fix fast.

I love Slomo. How can I spread the word?

If you enjoy our first application, make us happy by rating Slomo in the Mac App Store and tell your music loving friends about us.

Thanks!