Project and task management decision
CleanMyMac
A competent developer can build a useful local Mac cleaner/uninstaller in about a week and maintain it, but reproducing MacPaw's full product (antivirus, ongoing threat updates, cross-mac compatibility, and marketplace distribution) is not realistic for a solo DIY effort.
Visit website↗Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need — the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship.
What a replacement has to do
- Scan filesystem for reclaimable files, present safe-to-delete groups, delete selected items, uninstall apps and leftovers, and show disk-usage report.
What it still won’t have
- MacPaw's proprietary threat detection and ongoing malware signature/engine updates
- Vendor-provided notarization, code signing, and platform compatibility testing across macOS releases
- Tightly integrated paid features and support/updates bundled by MacPaw
- Setapp distribution and any marketplace subscription bundling
What remains hard
- Marketplace liquidity
Setapp is a marketplace where developers and users connect. Users get high-quality, ad-free tools while developers receive steady, predictable revenue without spending money and effort on marketing.
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 2 seats.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a native macOS app (Swift + SwiftUI, use FileManager and command-line helpers) that scans user home and common system cache locations, computes disk usage, identifies large files and common cache/log locations, detects duplicate files by hashing, presents results in a paginated UI, lets users mark groups and performs deletions with move-to-trash and permission escalation via Apple APIs. In scope: disk-usage scanner, duplicate detector (file hashing), safe delete with undo/trash, app uninstaller that removes .app bundles and common leftover folders, SwiftUI frontend, notarization-ready signing instructions, automated tests for scanning and deletion logic, error handling and user confirmations. Out of scope: building a malware engine, AV signature updates, cloud sync, enterprise licensing, and integrating with Setapp. Include unit tests, CI for signing/notarization steps, and clear logging and recoverable error paths.
How we checked
How the score was reached
- Pay verdict base20
- An open-source build was found+5
- 4 cited sources+3
- Hard moats found in the evidence-3
- Evidence score25
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time — so the same evidence always produces the same number.
How scoring works →Cited sources · 4
Every page the run actually retrieved.
- official productMacPaw | Making Your Mac Life Simpler
- official productSetapp marketplace description
- open sourceguhcostan/mac-cleaner-cli
- open sourcemomenbasel/PureMac
Integrity checks
What held up, and what did not.
