Download free

Free beta for Windows, Mac and Android

Is your device OK? Know in minutes.

Battery, storage, locks, parts. Checked in 5 minutes.

Download for WindowsDownload for MacDownload for Android
  • Free
  • No ads
  • No account

Don't want to install? Try a quick check in your browser

MacBook Air M1Illustration

92/100

Grade A
  • Battery91%
  • StorageGood
  • iCloud / MDM lockNone
  • System errors0
Battery is healthy, about 7 h of use. No locks found.

3 steps, about 5 minutes

  1. 1

    Download the app

    For Windows or Mac. Free, no account.

  2. 2

    Run the check

    The app reads battery, storage, locks and parts.

  3. 3

    Get your report and QR

    See results, save a PDF or send a link and QR to the buyer.

One app, every check

For buying used, selling, renting or returning a device.

  • Real battery

    Wear level, charge cycles and estimated runtime.

  • Storage & speed

    SMART health and real read/write speed.

  • iCloud / MDM lock

    Find out if the device is locked or remotely managed.

    Always free

  • Real or fake parts

    Check USB drives, RAM and graphics card match their specs.

  • Every part

    Display, keys, speakers, mic, camera.

  • AI vs. the listing

    Points out where the device doesn't match the listing.

  • Remote check

    Send the seller a code, they run the app, you see the report.

  • System errors

    Does it blue-screen or restart on its own?

  • Real battery test

    Unplug for a few minutes to see how long a full charge lasts.

All 4 platforms launch Nov 2026

  • Windows

    Beta · Launches Nov 2026

  • macOS 10.15+ · Intel & Apple silicon

    Beta · Launches Nov 2026

  • Android

    Beta · Launches Nov 2026

  • iPhone, iPad

    Launches Nov 2026

Free. No ads.

Pro adds verified reports and history. Both Pro options have the same features.

Free

0đ

Free forever

  • Every check
  • iCloud / MDM lock
  • Report + basic PDF
  • 7-day share link
Download free

Pro yearly

99,000đ /year

Renewal reminder, never auto-charged

  • Verified report with QR, never expires
  • Cloud history
  • Up to 10 devices
  • Pro PDF
Choose yearly
Best value

Pro lifetime

299,000đ

One-time purchase

  • Verified report with QR, never expires
  • Cloud history
  • Up to 10 devices
  • Pro PDF
Choose lifetime

Buy Pro inside the app after downloading.

FAQ

Is it really free?

Yes. Every check and the basic PDF are free forever, no ads. Pro adds verified reports, cloud history and up to 10 devices.

Do you collect my data?

We never sell data. Checks run on your device; results leave only when you share them. Read the privacy policy

Does it install or "speed up" anything?

No. DeviOK only reads. No cleaning, nothing hidden.

Why does Windows or Mac warn me?

The beta isn't code-signed yet. Windows: More info → Run anyway. Mac: right-click → Open.

When is the phone app?

Android, iPhone and the full Windows and Mac release are planned together around 11 Nov 2026.