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Scrapper

scrapperbeta

Reclaims the space developer caches, build artifacts, and simulators leave behind on your Mac.

Swiftv0.4.1Released 18 Sept 2026

Scrapper’s Brazilian green and gold robot app icon

Reclaim the space your dev tools left behind.

Scrapper is a free native Mac app for finding developer caches, build artifacts, and simulator data. Review what is taking up space, understand what removal means, and choose what to clean.

Download the latest release · Website · Report an issue

Requires macOS 26 or later. Download the ZIP, move Scrapper.app to Applications, and open it. Releases are signed with Developer ID and notarized by Apple.

Find the space you can reclaim

  • 156 cleanup targets across 19 categories: Xcode, simulators, AI tools, local models, package managers, containers, project builds, and more.
  • Saved scan results: reopen your last scan, see filesystem changes, and refresh individual targets, categories, or the whole scan.
  • Project and simulator filters: search by project, size, activity evidence, and removal consequence. Protect items or whole projects and review growth.
  • Cleanup review and history: check each removal method, follow per-item progress, and retry failed items.

Review before removing

Every target has a plain-English explanation and a safety label: Safe, Quit first, Rebuilds, or Destructive. Files move to Trash by default and can be restored until you empty it. Permanent file deletion is opt-in. Simulator devices and runtimes are removed permanently through Apple's simulator tools; Scrapper identifies those items separately before confirmation. Destructive targets are never included in safe-only cleanup.

Scrapper revalidates selected items, skips targets while their declared tools are running, and refuses file paths outside your home directory.

Part of the Compendium

Find Scrapper alongside Korok, Deku, and Kaepora in the Hyrule Compendium. The Compendium discovers this public repository through its hyrule-tool topic and reads hyrule.json for the listing, icon, and website.

This repository hosts public information, artwork, and release downloads. Application source is maintained separately.

Release history

  1. v0.4.1

    Scrapper 0.4.1

    Scrapper 0.4.1

    Reclaim the space your dev tools left behind.

    Requires macOS 26 or later. Universal app for Apple silicon and Intel.

    Download the ZIP, move Scrapper.app to Applications, then open it. Signed with Developer ID and notarized by Apple.

  2. v0.4.0

    Scrapper 0.4.0

    Scrapper 0.4.0

    Cosmo is now Scrapper, named after the flying salvage robot from
    The Legend of Zelda: Skyward Sword and joining the Hyrule Compendium family.

    • New dimensional robot mascot in Brazilian green, yellow, blue, and white,
      with sculpted J/G helmet initials and a matching Mac app icon.
    • Updated in-app idle, scanning, cleaning, and celebration animations, with
      Reduce Motion support and paused motion while the app is inactive.
    • Renamed app, CLI (scrapper), Swift packages, Xcode workspace and scheme,
      repositories, website, and release tooling.
    • Existing Cosmo settings, protected items, saved scans, and cleanup history
      are imported on first use. Existing Scrapper data is never replaced, and
      legacy data remains intact.

    The app now uses com.iamjason.scrapper; macOS may ask you to grant privacy
    permissions again. Install Scrapper.app and retire the old Cosmo.app when
    you are satisfied that your settings have transferred.

    Cleanup safeguards remain the same: files move to Trash by default, permanent
    removals are identified in the review, and protected or changed items are skipped.

    Requires macOS 26 or later. Universal app for Apple silicon and Intel.
    Download Scrapper-0.4.0.zip, move Scrapper.app to Applications, and open it.
    Signed with Developer ID and notarized by Apple. A SHA-256 checksum accompanies
    the download. Historical releases keep their original asset names and checksums.

  3. v0.3.1

    Cosmo 0.3.1

    Cosmo 0.3.1

    Cosmo now remembers your scans and gives you more control over refreshing,
    protecting, and cleaning developer data.

    • 156 cleanup targets across 19 categories, including nested Swift package
      builds, XcodeBuildMCP workspaces, simulator devices, registered XCTest clones,
      and orphaned test folders.
    • Saved scans and focused refresh: reopen your last results, detect filesystem
      changes, refresh an item, target, category, or the whole scan, and cancel work
      while keeping completed results.
    • Find and protect your work: filter by project, simulator, size, activity
      evidence, or removal consequence. Protect individual items and whole projects,
      and review growth since the previous scan.
    • Review every cleanup: separate Trash moves from permanent simulator
      removals, follow per-item progress, review cleanup history, and retry items
      after refreshing them.
    • Stronger cleanup checks: revalidate selected items immediately before
      removal, skip targets while their tools are running, and retain simulator
      runtimes using version-aware recommendations.

    Files move to Trash by default. Simulator devices and runtimes are removed
    permanently through Apple's simulator tools and are identified separately in
    the cleanup review. Moving files to Trash does not free disk space until the
    Trash is emptied.

    Requires macOS 26 or later. Universal app for Apple silicon and Intel.
    Download Cosmo-0.3.1.zip, move Cosmo.app to Applications, and open it.
    Signed with Developer ID and notarized by Apple. A SHA-256 checksum is included
    with the download.

  4. v0.3.0

    Cosmo 0.3.0

    Molt is now Cosmo — same app, now named after its tardigrade mascot.

    Signed with Developer ID and notarized by Apple — download, unzip, double-click. macOS 26+.

    New in 0.3.0

    • Smart version cleanup: Recommended selection now keeps only the newest N versions of series like iOS Device Support, simulator runtimes, and Gradle distributions (configurable in Settings; 0 = ultra aggressive). Right-click any versioned target for Select All But Newest.
    • Renamed app, CLI (cosmo), and bundle id.

    Plus everything from 0.2.0: 152 cleanup targets across 18 categories, project artifact scanning, interactive storage map, Trash-by-default safety.

  5. v0.2.0

    Molt 0.2.0

    Signed with Developer ID and notarized by Apple — download, unzip, double-click. macOS 26+.

    152 cleanup targets across 18 categories: Xcode, simulators, AI tools, local models, package managers, containers, project artifacts, and more. Everything goes to Trash by default. No telemetry, no subscription.