Where Does macOS Track Installed Packages?
macOS records every installed package in a receipts database under /var/db, the ledger behind App Store and pkg installs.
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Every proper Mac install leaves a receipt. Pkg installers, App Store apps, and system updates each drop a small record noting package ID, version, and install time.
The directory answers which version of what arrived when, invaluable during broken update archaeology. Pkgutil reads the database from Terminal for queries and file lists. Receipts never contain the software itself, only proof it passed through.
Where macOS stores this, by platform
/var/db/receipts
One receipt per installed package with version and date. Query with pkgutil commands rather than browsing raw files.
Frequently asked questions
How do I check what installed something?
List the directory and grep for the vendor name. Each receipt names its package and version, which reconstructs install history without relying on Launchpad or memory.
Can I delete receipts to free space?
No. Receipts are metadata only, a few kilobytes each. Deleting them breaks uninstallers and updates that verify prior installs. The space savings round to zero against the risk.
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