app randomly quits after a while

[johan456789]

The app seemly randomly quits after a while. I wrote a script to monitor.

Click to view the script.

#!/bin/bash

APP_NAME="Clocker"

echo "Monitoring for $APP_NAME. Press Ctrl+C to stop."

while true; do
    # Wait for Clocker to launch
    PID=""
    while [ -z "$PID" ]; do
        PID=$(pgrep -i "$APP_NAME")
        sleep 1
    done

    NOW=$(date +"%Y-%m-%dT%H:%M:%S")
    echo "$NOW Detected $APP_NAME running (PID: $PID)"

    # Wait for Clocker to exit
    while kill -0 $PID 2>/dev/null; do
        sleep 1
    done

    NOW=$(date +"%Y-%m-%dT%H:%M:%S")
    echo "$NOW $APP_NAME (PID: $PID) exited"
    say "$APP_NAME has exited"
done

I don't see any pattern and can't tell why it randomly quits. Is there a log stored somewhere I can share?

2025-09-24T21:10:17 Detected Clocker running (PID: 30830)
2025-09-27T00:21:00 Clocker (PID: 30830) exited

2025-09-27T04:32:23 Detected Clocker running (PID: 85727)
2025-09-28T04:38:20 Clocker (PID: 85727) exited
2025-09-28T04:38:36 Detected Clocker running (PID: 85091)
2025-09-28T13:22:36 Clocker (PID: 85091) exited

Clocker - World Clock v24.03 (113)
macOS 15.6.1 (24G90)

[johan456789]

It seems when the OS is under heavy load (not sure if it's compute or memory), clocker might exit

[amarcus]

Found a workaround: open Clocker's settings window and keep it open. You can minimize it or let it go under other windows, just don't close. Mac OS Tahoe forcibly closes apps that don't have active windows, that's it.

[mracos]

Might be helpful, this was also happening for Calendr. Something that they did was implementing a "exit confirmation modal" 👀

[pakerwreah]

The "exit confirmation" didn't help. It never appeared for the users affected by this behavior.
My last attempt to solve this was to start a dummy activity that signals the OS that we're doing something important.

I have this now in my AppDelegate. I'm not sure if it worked, but I didn't get any feedback from the users yet.

private let activity = {
    ProcessInfo.processInfo.beginActivity(
        options: [
            .userInitiatedAllowingIdleSystemSleep,
            .automaticTerminationDisabled,
            .suddenTerminationDisabled
        ],
        reason: "Stop killing my app!"
    )
}()

btw, this is not Tahoe specific. The first report I got was for Mac OS 15.3.2