About

Every operating system tells you the disk is full and then refuses to say what is on it. macOS collapses tens of gigabytes into a category called System Data. Windows offers a bucket named Other. Neither will let you open it.

The tools that fill that gap mostly pick one of two approaches. Cleaners decide for you what counts as junk and hide the rest behind a button. Analyzers show you everything but render it as a table, which answers what the single biggest file is and almost nothing else. I wanted the third thing: the whole disk as one picture, where the weight is obvious and I still decide what goes.

LumaDisk is native on both platforms. The scan engine is Rust, and the interface is GPUI, the same GPU-accelerated stack behind the Zed editor. There is no Electron, and it runs natively on Apple Silicon and on Windows ARM64 rather than through emulation.

That choice is the reason a full scan finishes in seconds and the chart stays smooth while you drag through a drive holding a million files.

A disk analyzer is a tool, not a service. You pay once. Scanning stays free forever whether you buy or not, so the free version is genuinely useful rather than a countdown to a paywall.

Support email reaches me directly, not a queue: [email protected]. I read every message. Bug reports with a screenshot and your OS version are the most useful thing you can send.

You can also find LumaDisk on X, read the guides, or see the refund policy before buying.