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CrystalDiskInfo vs Kap

CrystalDiskInfo logo

CrystalDiskInfo

Utilities

Free Windows tool that reads S.M.A.R.T. data from drives and warns before they fail

From
Free
Rated
-
Full reviewWebsite
Kap logo

Kap

Utilities

Free open source screen recorder for macOS, focused on video and GIF capture rather than annotation

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CrystalDiskInfo many USB enclosures do not pass S.M.A.R.T. commands through, so external drives often report nothing at all and users read that as a healthy result.; Kap it has no annotation tools at all, so any still-image markup work needs a separate app such as Shottr or CleanShot X.
  • They diverge on capability: CrystalDiskInfo covers S.M.A.R.T. reporting, Kap covers Multi-format export.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which CrystalDiskInfo and Kap actually diverge.

Attributes where CrystalDiskInfo and Kap differ
AttributeCrystalDiskInfoKap
PlatformsWindowsMac

Identical on both: starting price (Free), pricing model (Open source, no licence fee), 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 CrystalDiskInfo

  • S.M.A.R.T. reporting
  • NVMe support
  • Threshold alerts
  • Temperature monitoring
  • Standard and Shizuku editions
  • MIT licensed

Only in Kap

  • Multi-format export
  • Area, window or display capture
  • Plugin system
  • Basic trimming
  • Menu bar operation
  • Open source

What people use each for

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

CrystalDiskInfo

  • Checking the true condition of a second-hand drive before trusting data to itnot Kap
  • Watching SSD endurance on write-heavy machines such as build servers and video workstationsnot Kap
  • Getting early warning of mechanical failure while a backup can still be takennot Kap
  • Auditing power-on hours and wear across a small fleet of machines one at a timenot Kap

Kap

  • A developer recording a demo GIF for a README or documentation pagenot CrystalDiskInfo
  • A marketer capturing a quick product walkthrough clip without buying screen recording softwarenot CrystalDiskInfo
  • Someone creating App Store style device-framed screenshots for a listingnot CrystalDiskInfo
  • A user who only needs video capture and does not want to pay for a suite of annotation features they will not usenot CrystalDiskInfo

Where each one falls short

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

CrystalDiskInfo

  • Many USB enclosures do not pass S.M.A.R.T. commands through, so external drives often report nothing at all and users read that as a healthy result.
  • It is Windows only, and there is no central console, so checking a fleet means visiting each machine or scripting an alternative.
  • A good status is not a prediction: drives fail suddenly with clean attributes, and treating the summary as an assurance leads people to skip backups.
  • The Shizuku edition ships anime artwork and voice packs, which is unsuitable on company machines and is often downloaded by mistake because it is the more visible option.
  • Vendors define raw attribute values inconsistently, so the same number means different things on different drives and the detailed view needs interpretation to be useful.

Kap

  • It has no annotation tools at all, so any still-image markup work needs a separate app such as Shottr or CleanShot X.
  • There is no scrolling capture or OCR, features both Shottr and CleanShot X include.
  • Editing is limited to basic trimming, so anything beyond a simple cut needs a dedicated video editor afterward.
  • It is Mac only, offering nothing for screen recording needs on Windows.
  • As a volunteer-maintained open source project, updates and bug fixes depend on community contribution rather than a company with paid support obligations.

Pricing, plan by plan

CrystalDiskInfo

Free
  • CrystalDiskInfoFree
    • MIT licensed
    • Commercial use permitted
    • All features in the free download

Kap

Free
  • KapFree
    • Free and open source under the MIT licence
    • MP4, WebM, GIF and device frame export
    • Plugin system for extended workflows

Which should you pick?

Choose CrystalDiskInfo if

  • You need s.m.a.r.t. reporting.
  • You want to start without paying.
  • You work on Windows.
  • You also want nvme support.
CrystalDiskInfo review

Choose Kap if

  • You need multi-format export.
  • You want to start without paying.
  • You work on Mac.
  • You also want area, window or display capture.
Kap review

Questions people ask

Is CrystalDiskInfo or Kap better?
Neither clearly leads. CrystalDiskInfo starts at Free and Kap at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CrystalDiskInfo or Kap?
CrystalDiskInfo starts at Free and Kap at Free.
Does CrystalDiskInfo or Kap run on more platforms?
CrystalDiskInfo runs on Windows. Kap runs on Mac.
Can I use CrystalDiskInfo for free?
Both have a free tier, so you can try either at no cost before committing.
What is CrystalDiskInfo best used for?
CrystalDiskInfo is most often used for checking the true condition of a second-hand drive before trusting data to it, watching ssd endurance on write-heavy machines such as build servers and video workstations, getting early warning of mechanical failure while a backup can still be taken, auditing power-on hours and wear across a small fleet of machines one at a time. Of those, checking the true condition of a second-hand drive before trusting data to it and watching ssd endurance on write-heavy machines such as build servers and video workstations are not what Kap is typically brought in for.
What can CrystalDiskInfo do that Kap cannot?
CrystalDiskInfo covers S.M.A.R.T. reporting, NVMe support, Threshold alerts, Temperature monitoring. Kap covers Multi-format export, Area, window or display capture, Plugin system, Basic trimming.

Answered from the vendors’ own pages

CrystalDiskInfo: Can I use it in a business?

Yes. It is MIT licensed with no personal-use restriction, which distinguishes it from several other free Windows utilities.

Kap: Is Kap free?

Yes, entirely. It is open source under the MIT licence with no paid tier.

CrystalDiskInfo: Why does my external drive show no data?

Most USB bridge chips do not pass S.M.A.R.T. commands through. Connecting the drive directly by SATA or NVMe usually reveals the attributes.

Kap: Does Kap do screenshots or only video?

It is focused on video and GIF recording. For still screenshots with annotation, pair it with Shottr or CleanShot X.

CrystalDiskInfo: Does a caution status mean I should replace the drive immediately?

It means an attribute has crossed a vendor threshold, most often reallocated sectors. Back up now, then decide. It is a warning, not a countdown.

Kap: Can Kap export directly to GIF?

Yes, GIF is one of its native export formats alongside MP4, WebM and Apple device frames.

CrystalDiskInfo: What is the difference between the editions?

Function is identical. The Shizuku edition adds themed artwork and voice packs; the standard edition is the plain one you want on a work machine.

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