The SpaceSniffer Insider’s Guide
Everything we know about SpaceSniffer in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
SpaceSniffer
The Insider’s Guide
Free portable treemap tool that shows what fills a Windows disk
Every plan, grade, refund rule and rival among desktop utilities, read from SpaceSniffer’s own pages.
Made by Uderzo Software · checked Nov 13, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from SpaceSniffer’s own pages, its app-store listings and our grades. Every fact in it is on SpaceSniffer’s page too, where it is kept up to date. Checked Nov 13, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.8
GPA, above 116 of the 186 other desktop utilities we grade
SpaceSniffer is a free, portable disk-space analyzer. It draws the folders and files on a drive as a treemap, where bigger blocks are bigger items, and lets you click or zoom into any block for detail. Typed filters limit the view by file type, size, age or color tag, and an export module writes text reports.
To get you started, here are 8 things to know about SpaceSniffer, taken from its own pages and our grades.
But it reports only, with no cleanup tools of its own, and the vendor's pages list no system requirements.
- 1
Best for seeing what fills a Windows disk
SpaceSniffer draws your drive as a treemap so you can see which folders are big, and it is free for personal and commercial use.
- 2
It is free
SpaceSniffer has no paid plan at all. Free for personal and commercial use. The vendor welcomes donations but does not require them.
- 3
It runs on Windows
Windows.
- 4
Treemap view
Folders and files appear as blocks sized by how much space they use. One click opens a block for detail and a double click zooms to it.
- 5
Filter field
Type criteria such as *.jpg, >2years or a color tag to limit the view; a leading pipe excludes matches. Filters can be combined.
- 6
Color tags
Mark files red, yellow, green or blue with keyboard shortcuts to keep track of what was examined, and filter by tag.
- 7
A 2.8 GPA, above 116 of 186
That is against the other desktop utilities we grade, on value, the free plan, features, ease of use and platforms.
- 8
Keep it
SpaceSniffer is free, so making your own would save you nothing.
SpaceSniffer at a glance
- Pricing
- Free
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Windows
- Made by
- Uderzo Software
- Category
- Desktop Utilities
- Our grade
- 2.8 GPA, good
The report card
Best for seeing what fills a Windows disk
SpaceSniffer draws your drive as a treemap so you can see which folders are big, and it is free for personal and commercial use. But it reports only, with no cleanup tools of its own, and the vendor's pages list no system requirements.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | Free for personal and commercial use. Donations are welcome but not required. |
| Free plan and trial | A | The whole program is free, with no limit or trial. |
| Features | C | A treemap, filters, color tags, live scanning and text exports. It does that job fully, but it is a smaller one: no cleanup or deletion beyond the Windows file menu. |
| Ease of use | B | Pick a drive and the map appears. No store rating is on record. |
| Platforms and integrations | D | The context menu support points to Windows, and no other platform is named. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who SpaceSniffer is for
- Fits if you want to see at a glance which folders are using your disk
- Works for people who prefer a portable program with typed filters
Who it is not for
- Skip it if you use a Mac or Linux, as no other platform is named
- Too light for you if you want it to clean up junk, since it only reports
- Watch out: the site lists no system requirements
- Watch out: downloads are linked through a mirror called dAppCDN, not hosted on the vendor's own page
Good to know
Good for
- Finding which folders or files fill up a drive
- Anyone who wants a portable tool with no installation
- Quick checks of old or oversized files by filter
Worth knowing
- It analyzes and reports; the vendor's pages describe no cleanup or deletion tools beyond the Windows file menu.
- The vendor's pages are short and the site lists no system requirements; the Windows context menu support points to Windows only.
- Downloads are linked through a mirror called dAppCDN rather than hosted on the vendor's own page.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
Free
No paid plan at all
SpaceSniffer is free to use.
The whole program is free, with no limit or trial.
SpaceSniffer
$0
Freeware for personal and commercial use; donations are optional.
The free plan
Free for personal and commercial use. The vendor welcomes donations but does not require them.
Read from uderzo.it on Nov 13, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Windows
Free portable treemap tool that shows what fills a Windows disk. Here is what it does, as its own site describes it, and what it covers: disk cleanup, file management.
A treemap, filters, color tags, live scanning and text exports.
- Treemap view
- Folders and files appear as blocks sized by how much space they use. One click opens a block for detail and a double click zooms to it.
- Filter field
- Type criteria such as *.jpg, >2years or a color tag to limit the view; a leading pipe excludes matches. Filters can be combined.
- Color tags
- Mark files red, yellow, green or blue with keyboard shortcuts to keep track of what was examined, and filter by tag.
- Live scanning
- You can navigate while the scan runs, and the view updates if the file system changes during a scan.
- Export module
- Produces text reports of the result, and the layout of the report can be customized.
Where it runs
- Windows
What it works with
Its own pages name no integrations.
SpaceSniffer is made by Uderzo Software.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
116/186
Other desktop utilities it is graded above
SpaceSniffer's GPA of 2.8 is higher than 116 of the 186 other desktop utilities we grade, and level with 37.
It stands best on free plan and trial (A, above 107 of 186) and worst on platforms and integrations (D, above 0).
SpaceSniffer has no paid plan.
On features, ease of use and platforms it scores 2.0 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 187 desktop utilities we grade, cut by the letter each got. SpaceSniffer’s own letter is outlined.
- AValue for moneyAbove 55 of 186
- AFree plan and trialAbove 107 of 186
- CFeaturesAbove 2 of 186
- BEase of useAbove 78 of 186
- DPlatforms and integrationsAbove 0 of 186
Price against what you get
Each dot is one of 103 desktop utilities. Further left costs less; higher up scores better on features, ease of use and platforms. SpaceSniffer is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
SpaceSniffer is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces.
What you could not
- Deleting system files without breaking anything.
- A file manager working directly on your disk.
- A real app for Windows. Something home-made would be a web page.
What this rests on. SpaceSniffer’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
WizTree, WinDirStat, TreeSize and DaisyDisk
The 4 tools SpaceSniffer is most often weighed against, with where each one differs from it.
- 3.0GPA
WizTree
Free plan · from $25 one-time
Fast disk space analyzer for Windows and macOS.
- Only WizTree lists a macOS app.
- WizTree can be bought with a one-time purchase.
- SpaceSniffer also covers file management.
- 2.8GPA
WinDirStat
Free
Free, open-source disk usage analyzer for Windows.
- WinDirStat is open source, according to its own site.
- SpaceSniffer also covers file management.
- 2.6GPA
TreeSize
Free plan
Windows disk space analyzer with reports and cleanup tools.
- TreeSize also covers reports.
- 2.4GPA
DaisyDisk
Free trial · from $9.99 one-time
Visual disk space analyzer and cleanup tool for Mac.
- SpaceSniffer has a free plan. DaisyDisk does not, though it has a free trial.
- Only SpaceSniffer lists a Windows app.
- Only DaisyDisk lists a macOS app.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
11
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is SpaceSniffer free?
Yes. SpaceSniffer is free to use.
How much does SpaceSniffer cost?
SpaceSniffer lists one plan. SpaceSniffer: $0.
What platforms does SpaceSniffer work on?
SpaceSniffer is available on Windows.
Does SpaceSniffer have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. SpaceSniffer is listed for Windows.
Does SpaceSniffer have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. SpaceSniffer is listed for Windows.
Is SpaceSniffer open source?
SpaceSniffer is not described as open source on its own site, as read on Nov 13, 2026.
Who makes SpaceSniffer?
SpaceSniffer is made by Uderzo Software.
What are the alternatives to SpaceSniffer?
The closest alternatives to SpaceSniffer in our directory are WizTree, WinDirStat, TreeSize and DaisyDisk.
How does SpaceSniffer compare with other desktop utilities?
SpaceSniffer's GPA of 2.8 is higher than 116 of the 186 other desktop utilities we grade, and level with 37.
Is SpaceSniffer good value for money?
ToolGPA grades SpaceSniffer A for value for money. SpaceSniffer has no paid plan.
Could I make my own version of SpaceSniffer?
SpaceSniffer is free, so making your own would save you nothing. And it is not the kind of software a weekend replaces.
Where this guide comes from
The prices, plans, platforms and features were read from SpaceSniffer’s own pages on Nov 13, 2026, and the grades were given on Nov 13, 2026. Graded from this listing, whose facts were read from Uderzo Software's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Uderzo Software. Prices change, so check uderzo.it before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- SpaceSniffer, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/spacesniffer
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "SpaceSniffer: The Insider's Guide", checked Nov 13, 2026. https://toolgpa.com/tools/spacesniffer
Know someone choosing between desktop utilities?
Send them this guide: toolgpa.com/tools/spacesniffer/guide
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See our other guides
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- Just Color Picker Insider's GuideFree portable color picker and editor for Windows and macOS3.2 GPA
- LocalSend Insider's GuideOpen-source file sharing between nearby devices, no cloud3.2 GPA
- Mos Insider's GuideFree Mac menu bar utility for smooth mouse wheel scrolling3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what SpaceSniffer’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. SpaceSniffer is a trademark of its owner, and this guide is not made, paid for or approved by Uderzo Software. Prices and plans change: check uderzo.it before you buy.