Is your PC in fine fettle?

A free Windows check-up that takes a few seconds and prints a receipt you can actually read. Battery, disks, memory, Windows, startup. In plain words.

Download for WindowsSee a sample receipt

Free · open source · no tracking · Windows 10 & 11

--:--

Your browser says

Screen
–
CPU threads
–
Memory
–
System
–
Disk health
can't see
Battery wear
can't see

That's all a browser can see.
Fettle sees the rest →

Read in your browser. Nothing is sent.

Sample receipt

This is what you get.

A sample receipt from a tired 2018 laptop.

Fettle reads Windows' own records: no drivers, nothing installed in the background, nothing changed.

How to read it

Fine. Nothing to do.
Good to know, nothing to do.
Keep an eye on it. The next line says how.
Act soon. Calm, but don't put it off.
Couldn't check, and why.
07/10/2026 07:12 UTC
CPU
Intel Core i5-8250U
Board
LENOVO 20KN
BIOS
N23ET86W (1.61) · 18 May 2023

Needs a little fettling.

  1. Next step 1Free up some space: empty the Recycle Bin, or move big files somewhere else.
  2. Next step 2A replacement battery would bring the runtime back.
  3. Next step 3Turn off the ones you don't need in Task Manager, under Startup apps.

Storage

  • Fine: Samsung PM981 NVMe 256GB looks healthy, 34% worn.
  • Couldn't check: Fettle can't read ST1000LM035-1RK172's health without administrator access.Run a Deep check to see it.
  • Keep an eye on it: Drive C: is almost full (5% free).Free up some space: empty the Recycle Bin, or move big files somewhere else.
details: Storage

Samsung PM981 NVMe 256GB

Size
256 GB
Type
NVMe SSD
Wear
34%
Temperature
41 °C
Power-on hours
11,320
Read/write errors
0
Spare
100%

ST1000LM035-1RK172

Size
1 TB
Type
SATA HDD

Drive C:

Free
14 GB of 254 GB

Drive D:

Free
612 GB of 1 TB

Battery

  • Keep an eye on it: Your battery holds 70% of its original charge, so expect less runtime than when it was new.A replacement battery would bring the runtime back.
details: Battery
Original capacity
57 Wh
Full charge
39.9 Wh
Charge cycles
486

Memory

  • Fine: 8 GB of memory installed.
  • Note: There's only one memory stick, so it runs in single-channel mode. A matching second stick could help in games.
details: Memory

Samsung M471A1K43CB1-CRC

Size
8 GB
Type
DDR4 SO-DIMM (laptop)
Speed
2400 MT/s
Slot
Channel A · DIMM 0
Total
8 GB
Slots
1 of 2 used
Channels
single channel

Windows

  • Fine: Windows 11 Home gets security updates until 12 October 2027.
  • Note: Your PC hasn't restarted in 23 days. A restart lets updates finish installing.
details: Windows
Version
25H2
Build
26200.6899
Edition
Core
Last update
23 Sept 2026
Since restart
23 days
Secure Boot
on
TPM
2.0

Startup

  • Keep an eye on it: 18 apps start with Windows, which can slow down startup.Turn off the ones you don't need in Task Manager, under Startup apps.
details: Startup
Adobe Creative Cloud
on
Canva
on
Discord
on
Dropbox
on
EA app
on
Epic Games Launcher
on
Google Drive
on
Lenovo Vantage
on
Logitech Options
on
McAfee WebAdvisor
on
Microsoft Edge
on
Microsoft Teams
on
OneDrive
on
Realtek Audio Console
on
Spotify
on
Steam
on
WhatsApp
on
Zoom
on
Cortana
off

Graphics

  • Note: The driver for Intel UHD Graphics 620 dates from 12 January 2023. A newer one may improve performance and fix bugs.
details: Graphics

Intel UHD Graphics 620

Video memory
128 MB
Driver
31.0.101.2111
Driver date
12 Jan 2023

Quick check (no administrator)

Fettle 1.0.0 · verdicts 1.0.3

  • Plain words first.Every line starts with a verdict anyone can read.
  • Says what it couldn't check.If Fettle couldn't check something, the receipt says so, and says why.
  • Numbers underneath.Tap details for the numbers behind each line.

For technicians

Hand the customer a receipt, not a lecture.

Run it on the bench, print it on A4 or Letter, or send a link. The customer reads the verdicts; you get the numbers.

  • Print or save as PDF
  • Share links that expire in 7 days, 30 days or 1 year
  • Deep check for disk health when you need it
  • Copy for Discord or Reddit, or save the full report as JSON

v1.1 Technician mode, with your logo, customer notes and before/after comparisons, is coming in v1.1.

Hidden by default
Serial number
hidden
PC name
hidden
Username
hidden
MAC and IP
hidden
Product key
never collected

Privacy

Private by default.

Serial numbers, the PC's name, your name, username and email address, and network addresses stay hidden. Product keys are never collected at all.

The app sends nothing on its own, apart from an update check you can turn off. A share link uploads the report behind the receipt you see, with the private details taken out, and only when you ask.

Read the privacy page →

Free, open source, no tracking.

MIT licence. No accounts, no ads, no telemetry. The source is public, so anyone can check.

Read the source on GitHub

Questions

Before you ask.

Asked often

Does it need administrator rights?

No. The normal check runs as a regular user.

Disk health needs administrator access, so there's an optional Deep check that asks for it and explains why. Without it, the receipt says the disk health couldn't be checked, rather than guessing.

Does it change anything on my PC?

No. Fettle only reads. It doesn't clean, "boost", update drivers or touch the registry, and it doesn't install anything that runs in the background.

When something needs doing, the receipt tells you what to do and you decide.

Mac or Linux?

No. Fettle is a Windows app, so it can read Windows' own records properly.

Check your own PC.

Download for Windows

Windows 10 & 11 · free · open source · nothing to buy