Plugsquire

Everything in your Mac's company.

Know whether everything plugged into your Mac is healthy

Plugsquire lists every device on every bus of your Mac, says what each one is, and checks it for problems. Each finding comes with its evidence and the fix.

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  • Native macOS app
  • No root access, no private APIs, no helper daemon
  • Serial numbers never leave your Mac

Your Mac knows what's wrong. It just doesn't say.

macOS spreads what it knows about your devices across System Information, Bluetooth settings, Disk Utility and the battery menu, and it rarely tells you when one of them has a problem.

  • An external SSD copies slowly, and nothing tells you it negotiated a slow USB link.

  • Your Mac charges slowly through a hub, and nothing shows the power it asked for next to the power it got.

  • Your AirPods run outdated firmware, and a Bluetooth mouse keeps dropping out. The clues sit in reports and logs you never open.

Left alone, it all looks like a slow Mac.

You blame the drive, the cable or the Mac, and replace a part that works.

A disk whose S.M.A.R.T. status reports failing keeps holding files you have no other copy of.

Caches, build data and old backups fill the internal disk until macOS warns you it is full.

One list. Every bus. A verdict on each device.

Plugsquire reads your Mac's own system report and puts every connected device in one list: what it is, how it is connected, and whether anything needs your attention.

Every bus in one inventory

USB with its hub tree, Bluetooth (connected and remembered), Thunderbolt, displays, storage, the power adapter, the internal battery, cameras and audio.

Identity you can check

Vendor and product IDs, serial, firmware, negotiated link speed, power granted versus power wanted, and the battery level of each component.

An audit that ends in a fix

Low or worn batteries, outdated AirPods firmware, drives on a slow USB link, slow charging through a hub, failing S.M.A.R.T. status, low disk space, weak Bluetooth signal. Each finding names its evidence, gives numbered steps, and opens the right System Settings pane where one exists.

Silent devices, found

A shaver or a lamp charging over USB-C sends no data, so it never appears in the USB list. Plugsquire reads the port controller, shows it on its port as an unidentified accessory, and lets you name it.

Space you can take back

See where the internal disk's space goes by category, how much could be freed, and how safe each category is to clear.

System Information shows raw reports, one section at a time. Plugsquire joins them, explains them and tells you what to do, using only public macOS interfaces: no root access, no private APIs, no helper daemon.

How it works

  1. Open Plugsquire.

    It scans every bus at launch, again every two minutes, and whenever a USB device is plugged in or removed.

  2. Read the list.

    Devices that need attention are flagged; observations that need no action are labelled "Nothing to fix".

  3. Follow the fix.

    Each finding says what to do in one line, then gives numbered steps and its source.

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[proof needed — quote, name and role of a Plugsquire user]

The storage categories and age rules follow mdoctor, an open-source Mac health tool.

The Bluetooth diagnostic runs the same checks, thresholds and score as the bt-diagnostic.sh script it was ported from.

Pricing

Free

$0

  • Device inventory and identity
  • Online details
  • Audit and fix guides
  • Silent devices
  • Eject and mount external drives
  • Storage breakdown
  • Signature and Native macOS appearances
Recommended

Pro

$4.99one-time

  • Everything in Free
  • Storage cleaning: review exactly what goes, then clean one category at a time
  • Bluetooth diagnostic: a health score for the radio, with recommendations

One payment for the version you buy and the updates published for it. Not a subscription.

Until the licence check ships, early builds have every Pro feature turned on.

[proof needed — refund policy]

FAQ

What does Plugsquire send over the internet?

Only a public model name and a maker name, to look up product details. Serial numbers, Bluetooth addresses, volume names and the names you give devices stay on your Mac. Turn "Online details" off and the app works offline with its bundled data.

Which Macs does it run on?

Macs running macOS 14 or later. Spotting power-only devices on USB-C ports needs an Apple silicon Mac.

Does it need admin rights or a helper?

No. It uses no root access, no private APIs and no helper daemon. Full Disk Access is optional: without it, the Trash and iPhone backups show as "Not measured".

Will storage cleaning delete something I need?

Nothing is removed until you press Clean for a category and confirm the exact list. Xcode archives and iPhone backups go to the Trash, so you can put them back. Cleaning stays inside that category's folders in your home folder, and out of Desktop, Documents, Downloads, Pictures, iCloud and Mail.

Can it update my devices' firmware?

No. It tells you when AirPods firmware is out of date, using Apple's published list. Other makers publish no common feed, so their devices show the installed version without a verdict.

Why isn't it on the Mac App Store?

The App Store sandbox blocks the hardware reads Plugsquire depends on, so it is distributed outside the store.

Is Pro a subscription?

No. Pro is a one-time $4.99 payment for the version you buy and the updates published for it.

See everything your Mac is keeping company with.

The core app is free. Pro is a one-time $4.99, with no subscription.

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