Diskira shows you exactly what's eating your Mac's disk — and reclaims it in one click. Native, transparent, $2.99/mo.
Find big files. Kill old caches. Move iOS simulators to your external drive — without a single Terminal command.
One screen, one button. Diskira finds and clears only what's safe, then tells you exactly how much space came back — in plain language.
For everyoneApple hides gigabytes behind one number called "System Data". Diskira decodes it — caches, logs, old iPhone backups, hidden snapshots — each with the right action.
Nobody else does thisMove big folders to your external drive; Diskira leaves a symlink behind so your apps never notice. Verified copy, one-click bring-back.
Nobody else does thisnode_modules from dead projects, unused Docker images, simulator runtimes for iOS versions you stopped testing. Routinely 20–100 GB.
For devs"Keep 20 GB free." Diskira watches your disk and clears safe caches automatically when space runs low — then tells you what it did.
The cleaner you never openEvery cleanup is logged with every file named. Put anything back with one click. Trash, never rm -rf.
Apple's storage panel shows one unexplained number — often 50–200 GB. Forums are full of people asking what's in it. Diskira answers: every contributor, named and measured, with a plain-English explanation and the right action for each.
Big folders you want to keep — just not on your Mac. Diskira copies them to your external drive, verifies every file, then leaves a symlink at the original path so every app keeps working. It even suggests what's worth moving: big folders nothing has touched in six months.
Every other cleaner waits for you to panic at a "disk full" alert. Diskira works the other way: set a free-space guardrail once, and it quietly keeps you above it — clearing only Safe-rated caches, never touching anything that needs your judgment.
Factual comparison — no trash talk. Just what each tool does.
| Diskira | CleanMyMac | DaisyDisk | Free tools | |
|---|---|---|---|---|
| Price | $2.99/mo · $19.99/yr | $40/yr | $10 once | Free |
| Decodes "System Data" | ✓ | — | — | — |
| Move-to-external + symlink | ✓ | — | — | — |
| Free-space guardrail (Autopilot) | ✓ | — | — | — |
| Developer presets (Xcode, Docker, node) | ✓ | Partial | — | — |
| Cleanup history + undo | ✓ | — | — | — |
| Shows every file before deletion | ✓ Always | Some flows | Manual | ✓ |
| Account required | No | Yes | No | No |
| Telemetry | None | Yes | None | None |
| Download size | ~5 MB | 300+ MB | 12 MB | ~1 MB |
Every plan includes every feature. 7-day free trial first — no credit card required.
Try first: download Diskira and use everything free for 7 days — no card, no account.
Billing by Stripe · Manage or cancel at diskira.com/account
That reputation is earned — by other apps. Diskira shows every file by name before anything is removed, sends things to the Trash instead of permanently deleting (unless you opt in), logs every action in History with one-click undo, and never shows scare popups. The risky categories are labeled Caution or Advanced and never run automatically.
No. Caches are working copies that apps rebuild automatically — that's what makes them caches. The first launch after a cleanup can be slightly slower while an app rebuilds what it actually needs. Anything an app can't rebuild is never marked Safe.
Diskira copies the folder to your external drive, verifies every file made it intact, then replaces the original with a symlink — a transparent pointer at the same path. Apps follow it without noticing. One click brings the folder back. The drive needs to be APFS-formatted (Diskira checks for you).
Easy Mode is one screen with one button — it runs only Safe-rated cleanups and tells you the result in plain language. The full app adds Smart Scan cards, the System Data X-Ray, the developer deep-clean, move-to-external, and Autopilot settings. Switch between them any time in Settings.
No. The 7-day trial starts when you open the app — no email, no card. If you subscribe, your license key arrives by email and you paste it once. We don't run accounts and we don't collect telemetry.
From your browser, any time: diskira.com/account → enter your license key → Stripe's portal opens where you can cancel, switch plans, or update your card. No emails to support, no retention tricks.
macOS changes every year, and cache locations change with every app update — Diskira only stays safe if it's maintained continuously. $19.99/yr is less than half of what comparable cleaners charge, and you can use the trial without paying anything.