See What's Eating Your Disk —
Then Track How It Changes.
DiskBrain scans 500,000+ files per second to show you exactly what's occupying your drive. Save snapshots automatically and compare any two dates to see what grew — nothing changes without you knowing.
No installer · No telemetry · Windows 10/11
"My C Drive Is Full — But I Have No Idea Why"
Windows never tells you where your space actually went. System updates pile up silently, apps leave gigabytes of leftovers, downloads and temp files accumulate in the background — and suddenly your disk is full with nothing obvious to delete.
Hard to Find
Space disappears into hidden folders, leftover installers, and system caches buried where Windows Explorer would never lead you.
Time Consuming
Manually clicking through folders one by one takes hours — and you still can't be sure you've found the real culprit.
Risky Deletion
Not sure if that folder is safe to delete? One wrong move could break an app — or worse, corrupt your system.
Everything you need to master your disk
Fast, smart, and featherlight — built for every Windows user.
Lightning-Fast Scan
Parallel Win32 engine powered by Rust and rayon. Scans 500,000+ files per second on SSD — your entire drive in seconds, not minutes.
Disk Timeline — Track Changes
Automatic snapshots saved after every scan. Compare any two dates to see which directories grew, which shrank, and by how much. Nothing changes on your disk without you knowing.
AI-Powered Analysis
Click any directory for an AI-generated explanation of what it is and whether it's safe to delete. Works on individual folders and on snapshot diffs.
Visual Space Discovery
Tree-based navigation with color-coded size bars. Red for >1 GB, yellow for >100 MB — the heaviest directories jump out instantly, no guesswork needed.
Built-in File Ops
Copy, cut, paste, rename, delete to Recycle Bin or permanently — all with full keyboard shortcuts (Ctrl+C/X/V, Del, F2). No need to switch to Explorer.
Directory Advisor
Automatically identifies system junk, app leftovers, update caches, and build artifacts. Know what's safe to clean without having to research each folder yourself.
Nothing changes on your disk without you knowing
DiskBrain automatically saves a snapshot every time you scan your drive. Come back days or weeks later, pick any two snapshots, and instantly see which directories are responsible for the growth — down to the exact file.
- 📅 Snapshots saved automatically on every scan
- 🔍 Compare any two dates side by side
- 📈 Top growing & shrinking directories at a glance
- 🤖 AI-powered diff analysis explains what happened
- 📊 trend charts (Pro)
Simple, honest pricing
Choose the plan that fits you. All Pro plans include the same full features.
- Fast disk scan & visual tree
- Snapshot history & comparison
- File ops (copy / delete / rename)
- 5 AI analysis calls / day
- 5 snapshots per drive
- Timeline trend charts
- Report export
Full access — same features across all billing cycles.
- Everything in Free
- 100 AI analysis calls / day
- 50 disk snapshots
- Timeline trend charts
- Report export
- All future updates included
Start reclaiming space today
Free forever. Pro when you're ready.
Download DiskBrain.exeWindows 10 / 11 · x64 · No installer required · Single .exe