Audio (1531 programs)

Pros: Slow down audio speed from 20% to 200%. Follow music notes and words easily. Compatible with standard audio formats. Supports Windows XP and above.

Cons: Dated user interface. More contents available at the paid version. Does not support DRM-protected MP4 files purchased from iTunes store. Not compatible with Spotify and Amazon.

Pros: Powerful. Good user interface. Simple. Large undo history.

Cons: No save in trial. No preview for effects. Limited number of options.