Lifespan
Lifespan is a macOS SSD health monitor that shows the remaining usable life of supported flash storage devices in simple percentage terms.
What is Lifespan?
Lifespan is a Mac utility for monitoring the remaining usable life of solid-state drives and other supported flash-based storage devices. It helps users keep an eye on SSD health by showing lifespan information in simple percentage terms, making it easier to spot drives that are nearing the end of their expected write life. The app is designed for people who want an easy way to watch internal storage health over time without digging through low-level disk data. Lifespan runs as a menu bar app and can alert you when a supported drive approaches a critical threshold. It also includes a drives view for checking health data directly in the app, and Micromat offers additional support for some external USB SSDs through its SAT SMART driver. This makes Lifespan most useful for Mac users who want ongoing SSD health awareness and earlier warning before storage problems lead to data loss.
Key features
- View remaining SSD life in simple percentage terms
- Monitor supported flash storage from the macOS menu bar
- Check drive health details in the app's drives view
- Receive alerts when a supported drive nears a critical threshold
- Track supported internal and Thunderbolt storage devices
- Add support for some external USB SSDs with Micromat's SAT SMART driver
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Safety overview
Status: Mostly safe
Lifespan is a legitimate disk-health utility for Mac. Its normal behavior includes reading storage health information and, if you choose expanded external-drive support, installing Micromat's SAT SMART driver so the app can access health data from some USB SSDs. That kind of access is consistent with the app's purpose, but any utility that installs a helper or driver deserves a little extra care: only keep the extra components if you use external-drive monitoring, and make sure your backups are current before relying on health readings for important decisions.
Recommendation: Keep Lifespan if you actively monitor SSD health or want menu bar alerts about drive wear. If you do not use it, you can remove it along with its helper components; the main effect is that you will lose ongoing drive-life monitoring and related alerts.
Common paths
/Applications/Lifespan.app
Support paths
~/Library/Application Support/Lifespan/Library/PrivilegedHelperTools/com.micromat.LifespanHelper
Preference paths
~/Library/Preferences/com.micromat.LifespanAgent.plist
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