DaisyDisk vs Mainspring: Disk Space or Settings?

DaisyDisk is the app people recommend when someone's Mac is out of space, and it is very good at that. It gets grouped with tuning utilities like Mainspring, so here is the distinction.

What it is

DaisyDisk scans your drive and shows what is using space as an interactive sunburst chart, letting you drill down and delete. It is a one-time purchase and does one job extremely well.

Where they overlap

Both are one-time purchases from independent developers, and both get recommended when a Mac feels sluggish.

Where they differ

• DaisyDisk finds and deletes large files. It changes no settings.
• Mainspring changes settings and deletes nothing.
• A full disk genuinely does slow macOS down, so if that is your problem, DaisyDisk addresses the cause directly.

Which should you use?

Check what is actually using your space first. If the drive is nearly full, a visualiser like DaisyDisk is the fastest way to fix it, though the built-in tools will get you most of the way for free. If the disk has plenty of room and the Mac still feels slow, the cause is usually animations or login items, which is Mainspring's territory.

Every setting here is a one-click, reversible toggle in Mainspring — no Terminal, and an undo button on all of it.