SystHist
SystHist is a macOS utility that shows your Mac’s system and security update installation history in a clearer, more detailed view.
What is SystHist?
SystHist is a Mac utility for reviewing the history of system software and security updates installed on a Mac. It helps users see macOS releases, security updates, Rapid Security Responses, and related installation records in a more organized way than the built-in system listings. The app presents update history in multiple views, including grouped and chronological lists, and can show file-level contents for updates when that information is available from macOS. This makes it useful for troubleshooting update issues, checking when a Mac was patched, or keeping a clearer record of changes over time. SystHist is published by Howard Oakley and is intended for users who want deeper visibility into macOS update history without using command-line tools.
Key features
- Browse installed macOS and security updates in a structured history view
- See update records in chronological order for easier review
- Inspect Rapid Security Responses and other background security-related updates
- View detailed contents of updates when macOS provides Bills of Materials
- Compare installed update history with the Mac’s current running macOS version
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Safety overview
Status: Safe
SystHist is a legitimate Mac utility for reading update history and related system records. Its access to update information is normal for its purpose, and using it should not change your system configuration. The main practical limitation is that the app can only show the records macOS keeps, so some update details may be incomplete or differ from the version currently running. Keep it updated if you use it regularly for troubleshooting or maintenance.
Recommendation: Keep SystHist if you want a clearer record of macOS and security update history or if you troubleshoot update behavior on your Mac. If you no longer use it, you can remove it without affecting normal macOS operation beyond losing this reporting tool.
Common paths
/Applications/SystHist.app
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