Keep your Mac fast, clean and under control.
Optimo is a native macOS utility for cleaning, monitoring and maintaining your Mac, including Macs running OpenCore Legacy Patcher. This guide walks through every page in the sidebar.
Start with CleanupRead the FAQGet Optimo1. Open Optimo
Move it to Applications and launch it. Pick your language in Settings if you like.
2. Grant Full Disk Access
System Settings › Privacy & Security › Full Disk Access. This lets scans see caches and app leftovers.
3. Explore the sidebar
Pages are grouped as Dashboard, Optimization, Management, Advanced and Hardware. Press ⌘K to jump anywhere.
4. You stay in control
Nothing is selected for you, and tasks that need an administrator password ask first.
Resource Monitor
Live CPU, memory, disk and network readings for your Mac, on one screen.
Live meters
CPU load, memory pressure, disk usage and network throughput refresh continuously, so you can see what the Mac is doing right now.
Smart notifications
Optional alerts when memory pressure gets high. Turn them on in Settings › General.
- Click Resource Monitor at the top of the sidebar.
- Watch the meters while you work to spot what slows the Mac down.
- Open System Tools › Process Manager if you want to quit a heavy process.
Fan & Temperature
Sensor readings and fan control for Macs that expose them.
Temperatures
Reads the available CPU, GPU and board sensors. Choose °C or °F in Settings › General.
Fan speeds
Shows current fan RPM so you can tell whether cooling is keeping up under load.
System Cleanup
Find caches, logs and leftovers, then choose exactly what to remove.
You choose, nothing is pre-selected
Every list uses round check-circles and starts empty. Only the items you select are removed.
Risk badges
Each module is marked Safe or Review so you know which results deserve a second look.
Sizes before deleting
Each category shows how much space it holds, so you can pick the biggest wins first.
Moves to Trash where possible
Removed items go to the Trash so you can put them back, with the exception of items that are only meaningful to delete outright.
- Open System Cleanup and let the scan finish.
- Expand a category and tick the items you want gone.
- Check the total shown, then click the clean button and confirm.
Storage Optimizer
Larger, deeper tools for finding wasted space.
Visual disk usage
Interactive map of what fills a volume. Drill into folders, go back and forward, and reveal items in Finder.
Large and old files
Surface the files that take the most room, so you can review them.
Duplicate files
Finds identical files. APFS clone deduplication keeps both names but shares the data, so space is freed without losing either file.
Chart style
Switch the chart style and show folder percentages in Settings › Storage.
- Open Storage Optimizer and pick a tool tab.
- Start a scan of the volume or folder you care about.
- Review the results, select items, and remove or deduplicate them.
Disk Health
S.M.A.R.T. status and drive condition at a glance.
Drive status
Reports whether each internal or supported external drive says it is healthy.
Wear and temperature
Shows available health attributes so you can spot an ageing SSD early.
Background checks
Choose how often Optimo re-checks in Settings.
Maintenance
One-click routines that macOS normally hides in Terminal.
Quick tasks
Flush DNS, rebuild Launch Services, reset caches, purge inactive memory and other common fixes.
Descriptions first
Each task explains what it does before you run it.
Dry run
Turn on Dry Run in Settings › Automation to see what a task would do without changing anything.
Scheduled maintenance
Set an automated routine and pick which steps it includes. Memory purge only runs if passwordless sudo is set up.
- Open Maintenance.
- Read the task description and press its run button.
- Enter your administrator password only if macOS asks.
Defaults
Choose which app opens which kind of file or link.
File types and links
See and change the default app for documents, images, media, web links and more.
Fix a stuck association
Reassign a type that opens in the wrong app, without hunting through Get Info.
- Open Defaults and choose the category tab.
- Find the file type or protocol.
- Pick the app you want from the list.
Storage Manager
Every volume in one place, with room to work.
Volumes
Internal, external and network volumes with used and free space.
Browse by volume
Pick a volume to see how its space is used.
Open in Finder
Jump straight to a volume when you need to work with its files.
Disk Catalogs
Index drives you do not keep plugged in, then search them anytime.
Offline catalogs
Scan an external drive once and keep a searchable record of its contents.
Browse and search
Navigate catalogs with Back, Forward and Up, or search by name, even when the drive is disconnected.
Default view
Pick list or another default layout in Settings › Storage.
- Connect the drive and open Disk Catalogs.
- Create a catalog from the drive.
- Later, open the catalog and search without reconnecting the drive.
App Manager
Uninstall apps completely, or reset one that misbehaves.
Complete uninstall
Drop an app on the target zone, or choose it. Optimo lists the app plus its caches, preferences and support files, then moves them to the Trash.
Factory Reset
Keeps the app but clears its preferences, caches and data for a clean start.
App Inspector
Details about an app: version, size, signature and where its files live.
- Open App Manager.
- Drag an app from Finder onto the drop zone, or click Choose App.
- Review the leftovers list and click Uninstall.
Services
Control what runs in the background and keep your Mac awake when you need it.
Launch Agents & Daemons
Third-party background helpers, with live CPU and memory. Apple's own services are protected.
Login Items
Apps that open at login, including orphaned entries whose app is gone.
Spotlight
Pause or resume indexing per drive, or rebuild the index.
Battery & Energy
Battery health, cycle count, adapter wattage and sleep timers.
Prevent Sleep
Keep the Mac awake for a set time or indefinitely, without changing System Settings.
- Open Services › Login Items.
- Review the list.
- Remove or disable what you do not want. Broken entries marked App Missing can be purged.
TCC Permissions
See which apps can use your camera, mic, screen and files, and revoke access.
Permission categories
Accessibility, Automation, Camera, Microphone, Screen Recording, Full Disk Access and more.
Reset per app
Reset one app's permission without touching the rest.
Signed backups
Backups of TCC data are integrity-signed so a tampered backup is not restored.
- Open TCC Permissions.
- Choose a permission type.
- Select an app you no longer trust and reset its permission.
Network Dashboard & Tools
See your connection, scan your LAN and switch DNS in one click.
Network Dashboard
Interface status, Wi-Fi details, and live throughput.
LAN device scanner
Discover devices on your network, with IP, MAC and hostname. Give each a nickname.
DNS profiles
Switch between Cloudflare, Google, Quad9 and AdGuard, or return to automatic.
Active connections
Which app is talking to which remote server, right now.
Wi-Fi diagnostics
Signal, noise, channel and band, plus saved networks.
Hosts editor & blocker
Edit the hosts file safely with toggles and syntax checks. Optimo keeps its own block clearly marked.
Speed test
Measure download and upload. Choose the units in Settings › General.
- Open Network Tools › LAN Scanner.
- Press Scan Network.
- Click any device to add a nickname.
Security
Fix Gatekeeper blocks and check your Mac's defences.
Quarantine remover
Clears the quarantine flag from one trusted app that macOS says is damaged, without disabling Gatekeeper.
Signature inspector
Shows who signed an app, whether it is notarized and whether Hardened Runtime is on.
Protection status
XProtect version, Application Firewall, stealth mode and FileVault state.
- Open Security › Quarantine Remover.
- Drag the blocked app in, or choose it.
- Click Remove Quarantine, then open the app.
Diagnostics
Read crash and kernel panic reports without digging through folders.
Crash & panic reports
Newest first, with the key header shown.
Kernel panics only
Isolate kernel-level crashes to spot a faulty kext or driver.
App logs
Logs kept by third-party apps.
Recent errors
System errors from the last hour.
- Open Diagnostics.
- Pick Kernel Panics as the source.
- Select the latest report to read the process and kext responsible.
System Tools
Utilities for monitoring, testing and storage.
Process Manager
Search, sort by CPU or memory, and quit or force-quit.
Disk Speed
Sequential read and write benchmarks for internal and external drives.
APFS Snapshots
List local snapshots and delete old ones to recover space.
Memory
Memory, swap and compression details.
Sleep & Wake
Why and when the Mac last woke.
Startup time
Boot time, split between kernel and login.
System Report
A summary of hardware, storage and macOS build.
- Open System Tools › Disk Speed.
- Choose a drive and press Start.
- Switch to Snapshots to remove old local snapshots.
OpenCore & OCLP
Tools for OpenCore Legacy Patcher and Hackintosh systems. Shown only when OpenCore is detected.
OCLP root patch status
Whether needed patches are installed, and mismatches between patcher and system.
Boot arguments
Review and edit boot-args, such as -v.
EFI backup & mount
Mount the EFI partition and make timestamped backups of your OpenCore folder. Restoring swaps folders rather than overwriting in place.
SIP decoder
Reads the SIP value into readable flags.
- Open OpenCore & OCLP › EFI.
- Create a timestamped backup before every macOS update.
- Keep the backup somewhere other than the same drive.
Command Palette
Press ⌘K from anywhere in the main window to jump to a page or run a task.
Search everything
Type to find pages and maintenance tasks.
URL scheme
Trigger the palette or a task from other tools with optimo://palette or optimo://run/<task-id>.
Custom commands
Commands you add yourself are integrity-signed so they cannot be altered behind your back.
Settings
Open with ⌘,. Settings has eight tabs.
| Tab | What it controls |
|---|---|
| General | Launch at login, menu bar monitor, smart notifications, appearance (System, Light or Dark), language, temperature unit and speed-test units. |
| Menu Bar | Readouts next to the icon, popover rows, layout and text options, and the utility buttons. |
| Access | Full Disk Access status and the administrator password option. When saved, the password lives in your Keychain and is only used for the account that is logged in. |
| Storage | Chart style, folder percentages, EFI auto-open and the default catalog view. |
| Automation | Dry Run, scheduled maintenance and which steps it performs. |
| Updates | Automatic checks and downloads through Sparkle, and update channel. |
| Advanced | Further options for power users. |
| About | Version, licences and links. |
Shortcuts
| Shortcut | Action |
|---|---|
| ⌘K | Open the Command Palette |
| ⌘, | Open Settings |
| ⌘[ / ⌘] | Back / forward in the disk and catalog browsers |
| ⌘↑ / ⌘↓ | Up a folder / open the selected folder |
| ⌘R | Rescan in the disk usage view |
| ⌘I | Get info on the selected item in the disk usage view |
| ⌘Q | Quit Optimo |
Frequently asked questions
Is Optimo safe? Will it delete my documents?
Optimo only removes what you select. Nothing is pre-selected, and your personal folders are not scanned for cleanup. Items you remove go to the Trash whenever possible.
Why does Optimo ask for Full Disk Access?
macOS protects caches, mail and other folders. Without Full Disk Access, scans see only part of your Mac. Grant it in System Settings › Privacy & Security.
What does the administrator password do?
A few tasks need administrator rights. If you save the password, it is stored in the macOS Keychain and handed to the command securely, never typed into a command line. If you do not save it, macOS shows its normal dialog.
How do I undo a cleanup?
Open the Trash in Finder, right-click the item and choose Put Back.
Which Macs and macOS versions are supported?
macOS 11 Big Sur through macOS 27, on Intel and Apple Silicon, including Macs patched with OpenCore Legacy Patcher.
Which languages are available?
English, German, Spanish, Finnish, French, Italian, Dutch, Portuguese and Swedish. Change it in Settings › General or the Language menu.
An app keeps crashing. Do I have to reinstall it?
No. Use App Manager › Factory Reset to clear that app's preferences and caches.
I used to call it Mac Optimizer. Did I lose my data?
No. On first launch Optimo migrates settings, saved data, Keychain items and its hosts entries from the old name.