Shown first, done in one click
One click
Closes idle programs and clears old junk, after you have seen the list.
Open
OneClick Optimizer finds the idle dev tools, old node_modules and junk files slowing your Windows PC. It shows you each one, then clears them when you say so.
The app isn't code-signed yet, so Windows may say it protected your PC: choose More info, then Run anyway. It installs just for you, with no admin prompt.
19.6 GB found on one laptop
Developer junk
node_modules, build folders and caches from projects you stopped touching.
OpenCleans up while you are away
Autopilot
Daily or weekly, only when your PC is idle. Never closes what you use.
Open1.9× faster on a busy PC
Focus mode
Background programs slow down so the app you are using gets the whole machine.
OpenUses 2.5 MB of memory
Tray watch
A quiet icon that speaks up only when memory runs out or tools sit idle.
OpenReal numbers, real laptop
Measured, not promised
Every figure on this page was measured, and you can rerun it.
OpenNothing hidden
Safe by design
No registry cleaning, no RAM "boost", and every change listed in History.
OpenTap or swipe the cards
Why OneClick Optimizer
Installs in a second
One file, no admin prompt. It installs just for you, and you can remove it from Settings like any app.
Shows you everything first
Every program it would close and every folder it would clear is listed before you press anything, and kept in History afterwards.
Tiny and quiet
1.2 MB to download and about 3.9 MB of memory. No ads, no account, no tracking.
Already have it?
The app finds new versions by itself and asks before updating. Your history and settings stay as they are.
Measured on a real laptop
An everyday developer laptop with of RAM and CPU threads, running . When we measured, its programs had reserved on of RAM, so Windows was moving memory to disk to keep up. Measured .
Developer junk on this laptop
Show as a table
Focus mode on a busy PC
Seconds to finish the same task. Lower is better.
Show as a table
Junk files on this laptop
One-click Optimise ticks only what is safe to delete. The rest is listed for you to decide.
Ticked by defaultYour call
Show as a table
Memory one click would free
Programs sitting idle that start again by themselves the next time they are needed.
Earlier that day, one click in the tray closed a Gradle daemon and 2 adb servers holding about 1.5 GB, and deleted 1.3 GB of junk. That comes from the app's own log.
Show as a table
How we measured
- All of it comes from
oneclick-cli bench, which is in the download, plus the app's own memory use measured on the same PC. Run it and you get your own numbers; one laptop is not every laptop. - Scans are read-only. Developer junk counts real files and skips links. Sizes use binary units, like Windows Explorer.
- The app's memory is the private memory Windows reports for its processes: the window after a full scan, the tray watch after 10 seconds.
- Focus test: one hashing task, timed alone, next to 2 busy programs per CPU thread, and next to the same programs after Focus mode's efficiency mode was applied to them. Each is the median of 5 runs. Only programs the test started were slowed, and the power mode was not changed.
What it does
One click
You see the list, then you click
A scan takes about two seconds and gives your PC a health score. The Optimise button lists every change it will make before you press it. Untick anything you want to keep.
Optimise does
- Close programs that sit idle: Gradle and Kotlin daemons, adb, dev servers nobody is using
- Delete temp files older than 7 days, and crash dumps
- Stop apps that open at sign-in for no reason
- Set always-on background services to start only when needed
It never does
- Clean the registry, or "boost" RAM by flushing caches
- Close a Windows process or anything you are using
- Follow a link out of a folder it cleans
- Change anything without showing it to you first
Developer junk
Old projects, cleared safely
It finds node_modules, Rust target, Gradle build, Python virtual environments, .NET bin/obj and the big package caches on every drive, with sizes and when each project last changed.
- A folder counts only when its project file sits next to it, and that is checked again right before deleting.
- Projects nobody changed for 30 days are ticked. Package caches never are.
- Windows, Program Files and AppData are never searched.
Autopilot Focus mode
Clean-ups on their own, full power on demand
Autopilot runs daily or weekly once your PC has been idle for 5 minutes. It deletes old temp files and closes build daemons that sat idle for 30 minutes with nothing connected to them. Mark anything "never close" and it stays put.
Focus mode puts busy background programs into Windows' efficiency mode and switches the power mode to Best performance. Turn it off and everything goes back.
Tray watch
Out of the way until it matters
The tray icon changes colour with memory pressure. Click it for your biggest apps, what one click will do, and a Focus mode switch. It uses about 2.5 MB of memory.
It speaks up only when memory has been almost full for two minutes, when dev tools sit idle, or when a new version is ready, and it waits while you present or play full-screen.
Free, with a lifetime Pro
Scanning, every detail page and undo stay free for good. Pro unlocks the rest, once, for life.
$10$20 lifetime
Pay once, keep it for life. No subscription, no monthly fee, no account. Every future update included, on up to 3 PCs. Launch price until 31 January 2027, then $20 lifetime.
| Feature | Free | Pro, $10 lifetimePro, $20 lifetime |
|---|---|---|
| Scan and fix one by onehealth score, junk files, startup apps, services, undo | Yes | Yes |
| One-click Optimisein the app and from the tray | 3 times | Unlimited |
| Developer junknode_modules, build folders, package caches | See it | Clean it |
| Autopilotclean-ups that run on their own | — | Yes |
| Focus modefull power for the apps you use | — | Yes |
Lifetime means Pro and every update for as long as the app is offered. Sales are final, so try the free version first. If Pro won't work on your PC, we fix it or refund you. Refund policy · Terms
What leaves your PC
No analytics, no ads, no account. The app asks GitHub whether a new version exists, which like any web request shows GitHub your IP address. Activating Pro sends your key and an anonymous PC tag to the store, Polar, never your PC name. Scans, history and settings stay in %LOCALAPPDATA%\OneClickOptimizer.
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