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Full user review
"Quick spring clean"
Unintrusive - just sits in the app bar and does it job.
Quick - only done it twice but does a nice little optimize.
A bit more detail on what it's actually doing, even if it's only available as an "Advanced" option. Maybe a bit more time to make a selection to throttle a misbehaving app because the machine can be a little slow to respond when something fired.
Nice little app that keeps my Mac running smoothly and has helped identify a few truant apps that were seriously hogging my CPU (I'm looking at you Firefox!).