See what ate
your disk space

Your C: drive lost 40 GB this month and no analyzer can tell you why — because they all answer the wrong question.

Other tools show you what is large.

DiskSpace shows you what became large.

Get it on Microsoft Store

After the first scans

A timeline, not a one-time snapshot.

Windows Update cache +6.1 GB

Developer cache +3.4 GB

Temp cleanup -1.2 GB

Browser cache +892 MB

Recycle Bin -640 MB

What changed on this PC last 30 days

Grew — took space Shrank — gave it back Barely moved

▲ C:\Users\you\AppData\Local\Packages\Cache +22.4 GB

▼ C:\Windows\Temp −3.2 GB

Built around one question nobody else answers

“What changed?” — everything below exists to answer it well.

Time travel through your disk

Compare recent snapshots with built-in ranges: 24 hours, 3 days, 7 days, 30 days, or 60 days.
See a summary, delta treemap, and top movers for the selected range.
Free shows the 3-day window; Premium opens the longer history already saved on your PC.

▲

Delta treemap

Tiles are sized by the amount of change, not by total folder size.
Red shows folders that took more space; green shows space freed, so the biggest movers stand out.
Click a tile or mover to open the folder detail behind that change.

Plain-English attribution

Groups noisy paths into buckets like Windows Update, Browser Data, Games, Developer Caches, App Data, and Temp Files.
Totals related folders together so one cache or app family is easier to spot.
Keeps exact folder paths available when you need to drill into the details.

◷

Quiet scanning

Scans run at background I/O priority, with progress throttled so the app stays responsive.
Premium automatic scans defer during battery saver or full-screen sessions.
You can pause or cancel a scan from the app when you need the machine back.

Growth alerts Premium

Create rules for folders that grow by more than your chosen threshold.
Get a low-space forecast when a drive is projected to run out soon.
Review fired alerts in the app and dismiss the ones you've handled.

⤓

Export useful data Premium

Export change comparisons as CSV or JSON.
Export folder-size trees as CSV or JSON for charts, IT tickets, or your own records.
Save exports as local files through the Windows file picker.

Free does the job. Premium goes deeper.

Install DiskSpace from the Microsoft Store. Unlock Premium with a one-time payment.

Free

$0 / forever

The full “what changed” experience, on the drive that matters most.

✓3 days of history
✓Scan whenever you want, in one click
✓Your system drive (the one Windows runs from)
✓Browse 3 folder levels deep
✓Compare any two snapshots
✓Delta treemap & top movers
✓Optional snapshot at Windows start

Install from Microsoft Store

Premium

Save $45 — launch offer

~~$69.99~~$24.99 once

Buy once, keep it. No renewal, ever.

✓Everything in Free
✓Automatic background snapshots — hourly to daily
✓Every drive on the machine
✓The whole folder tree, however deep
✓60 days of history
✓Growth alerts & free-space forecast
✓CSV / JSON export
✓Custom scan schedule from 1–24 hours
✓Unlimited live-watched folders
✓Snapshot notes (“installed this app here”)
✓30-day offline grace after licence check
✓Move your licence between PCs

One-time payment Install the app first

Which one should I pick?

Use the Store for the app. Use the payment button for Premium.

✓Install: Microsoft Store handles delivery, updates and reinstalling the app
✓Premium: the checkout provider handles payment, tax, receipts and card details
✓Activation: enter the purchase email and one-time code in DiskSpace
✓Licence: covers one PC at a time, and you can move it whenever you like
✓The app checks your licence with us about once a day, and keeps working for 30 days offline

Upgrading reveals history DiskSpace already recorded — your timeline gets deeper the moment you buy.

Prices shown in USD; final local pricing and tax appear before checkout. · Privacy · Terms · Refunds · FAQ · Support

See what ateyour disk space