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Utilities · head to head

TreeSize vs Truecaller

TreeSize logo

TreeSize

Utilities

Windows disk space analyser whose free edition may be used commercially, with paid tiers for scheduled reporting

From
Free
Rated
-
Full reviewWebsite
Truecaller logo

Truecaller

Utilities

Caller ID and spam blocking app that identifies unknown numbers by crowdsourcing users' contact books

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: TreeSize it traverses directories rather than reading the NTFS master file table, so a local drive scan takes noticeably longer than the fastest alternatives.; Truecaller its caller ID database is built from other users uploading their contact books, which means a person's name and number can be listed without them ever installing or consenting to Truecaller directly.
  • They diverge on capability: TreeSize covers Free edition licensed for business, Truecaller covers Caller ID.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which TreeSize and Truecaller actually diverge.

Attributes where TreeSize and Truecaller differ
AttributeTreeSizeTruecaller
Pricing modelquoteFree tier plus subscription
PlatformsWindowsiOS, Android

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Utilities).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in TreeSize

  • Free edition licensed for business
  • Network share scanning
  • Reports by age and owner
  • Duplicate file search
  • Scheduled scans
  • Exports

Only in Truecaller

  • Caller ID
  • Spam blocking
  • Call recording
  • SMS spam filtering
  • Truecaller for Business
  • Premium profile controls

What people use each for

The jobs each tool is most often brought in to do.

TreeSize

  • Deploying one free disk analyser across a company without a personal-use licence problemnot Truecaller
  • Reporting on a file server by owner and file age before an archiving or quota decisionnot Truecaller
  • Finding duplicate files spread across departmental network sharesnot Truecaller
  • Producing a storage report for someone who will read a PDF but not run a scannot Truecaller

Truecaller

  • Someone wanting to identify unknown numbers calling from delivery services, banks or scam operationsnot TreeSize
  • A user who wants unknown-sender SMS automatically filtered out of the main inboxnot TreeSize
  • A small business wanting its verified name and logo to show when it calls customersnot TreeSize
  • A person who wants to check whether their own number is unexpectedly listed and request removalnot TreeSize

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

TreeSize

  • It traverses directories rather than reading the NTFS master file table, so a local drive scan takes noticeably longer than the fastest alternatives.
  • It is Windows only, so file servers running Linux or a NAS appliance need a different tool or a share mounted from a Windows machine.
  • Useful features are spread across three paid tiers, so the single capability a buyer needs frequently sits two tiers above the one they were considering.
  • Scanning large network shares generates significant traffic and takes hours, which means it has to be scheduled rather than run when someone asks the question.
  • Pricing is per licence with separate maintenance, so an accurate total for a team requires a quote rather than a figure from the website.

Truecaller

  • Its caller ID database is built from other users uploading their contact books, which means a person's name and number can be listed without them ever installing or consenting to Truecaller directly.
  • Removing a number requires actively finding and using the unlisting tool; it is opt-out, not opt-in, so most people never realise they need to do this.
  • The free tier is ad-supported, and ads appear on the call screen itself, which some users find intrusive during otherwise mundane phone use.
  • Call recording availability depends on local law and has been restricted or removed in some regions and OS versions, so it cannot be relied on everywhere.
  • Regulatory and app-store scrutiny of the contact-upload model has led to restrictions or bans in some countries, so availability and feature set are not consistent globally.

Pricing, plan by plan

TreeSize

Free
  • TreeSize FreeFree
    • Folder size analysis and treemap
    • Licensed for private and commercial use
    • Basic exports
  • TreeSize Personal, Professional and Enterprise$undefined/year
    • File search, duplicate detection and full exports
    • Network share and file server scanning
    • Scheduled unattended scans and stored reports

Truecaller

Free
  • FreeFree
    • Caller ID and spam blocking
    • Ad-supported
    • Limited profile privacy controls
  • Premium$2.99/month
    • Ad-free
    • See who viewed your profile
    • Priority spam list updates

Which should you pick?

Choose TreeSize if

  • You need free edition licensed for business.
  • You want to start without paying.
  • You work on Windows.
  • You also want network share scanning.
TreeSize review

Choose Truecaller if

  • You need caller id.
  • You want to start without paying.
  • You work on iOS, Android.
  • You also want spam blocking.
Truecaller review

Questions people ask

Is TreeSize or Truecaller better?
Neither clearly leads. TreeSize starts at Free and Truecaller at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, TreeSize or Truecaller?
TreeSize starts at Free and Truecaller at Free.
Does TreeSize or Truecaller run on more platforms?
TreeSize runs on Windows. Truecaller runs on iOS, Android.
Can I use TreeSize for free?
Both have a free tier, so you can try either at no cost before committing.
What is TreeSize best used for?
TreeSize is most often used for deploying one free disk analyser across a company without a personal-use licence problem, reporting on a file server by owner and file age before an archiving or quota decision, finding duplicate files spread across departmental network shares, producing a storage report for someone who will read a pdf but not run a scan. Of those, deploying one free disk analyser across a company without a personal-use licence problem and reporting on a file server by owner and file age before an archiving or quota decision are not what Truecaller is typically brought in for.
What can TreeSize do that Truecaller cannot?
TreeSize covers Free edition licensed for business, Network share scanning, Reports by age and owner, Duplicate file search. Truecaller covers Caller ID, Spam blocking, Call recording, SMS spam filtering.

Answered from the vendors’ own pages

TreeSize: Is TreeSize Free really free for business use?

Yes. JAM Software licenses the free edition for private and commercial use, which is the main reason it appears on corporate machines where other free analysers are not permitted.

Truecaller: How does Truecaller know who is calling me from an unsaved number?

It matches the number against a database built largely from other users' uploaded contact lists, plus spam reports from its user base.

TreeSize: Why is it slower than WizTree?

Method. WizTree reads the NTFS master file table; TreeSize walks the directory tree, which is slower but works on network shares and non-NTFS volumes.

Truecaller: Can I remove my number from Truecaller if I never installed it?

Yes, Truecaller provides an unlisting search and removal tool at truecaller.com/unlisting, though you must find and use it yourself.

TreeSize: Can it scan a NAS or Linux file server?

It scans them as network shares over SMB, with the speed penalty that implies. There is no agent that runs on the server itself.

Truecaller: Does Truecaller read my messages or call content?

Truecaller states it does not access call or message content, only caller ID and spam-reporting metadata.

TreeSize: What does the Enterprise tier add?

Scheduled unattended scans, stored historical results and reporting across servers, which is the difference between a cleanup tool and a storage reporting system.

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