Can I download it now?
Not yet. This is a preview of the working local Mac app, not a public release. No App Store or TestFlight availability is claimed.
Can it kill a process?
Yes, after review. Normal and force stops are separate choices, guarded by process identity and user restrictions. Stopping a process can interrupt work or lose unsaved data.
What about apps running in the background?
Inspect visible background processes and app helpers alongside foreground workloads. Compare their CPU and resident RAM, see how long a process has been running, and inspect available identity and startup metadata before deciding what to stop. Background does not mean unnecessary: macOS and your apps rely on many of these helpers.
Why did something come back after I stopped it?
An app, login item or service manager may launch another process. PerformanceDaddy shows matching launch-configuration clues and watches for matching executables after stops requested through the app. A match is not proof of an automatic restart or its cause. This history stays in memory for up to 24 hours and clears when you quit; the app does not disable startup items for you.
Which agents does it recognize?
Local metadata recognition covers Codex, Claude, Devin, Hermes, Aider, Gemini CLI, OpenCode and Cursor CLI. It cannot identify every wrapped launch or tell whether a conversation is active.
Does every report prove the root cause?
No. Reports separate observed signals, thresholds not met and missing evidence. CPU activity is not proof of why a task was slow. Network latency, blocked threads, GPU activity and disk latency are not measured by the standard recording.
Can it read fan speed or temperature?
The app reports macOS thermal state and available power evidence. Raw fan RPM, temperature and fan controls are not implemented.