Continuing the discussion from Where to find App ID for watch face buttons?:
You asked in the wrong forum I am moving this to the Watch Face Studio forum
Ron
Samsung Developer Relations
Here are some common Samsung ones
com.samsung.android.shealthmonitor Health Monitor
com.samsung.android.watch.cameracontroller Camera Controller
com.samsung.android.watch.findmyphone Find My Phone
com.samsung.android.watch.flashlight Flashlight
com.samsung.android.watch.alarm Alarm
com.samsung.android.mediacontroller Media Controller
com.samsung.android.gallery.watch Gallery
Better idea,
go to Play Store and download the Package names app . open it and you will see the apps that are installed on your phone.
or
Try running simple adb commands
adb connect 192.168.xxx.xxx:5555 (your watch IP address & enable debugging)
adb shell
pm list packages
You will get an output list like this
package:com.android.cts.priv.ctsshim
package:com.google.android.ext.services
package:com.android.providers.telephony
The app ID is the text after package:
com.samsung.android.wear.shealth/com.samsung.android.wear.shealth.app.heartrate.view.HeartRateActivity
Ron
Samsung Developer Relations
Thank you. Does the “package names app” downloaded from the Play Store include apps on my Samsung Classic 6 watch?
No idea what you mean. Can you write that response in clear language. In other word does the “package names app” downloaded from the Play Store include apps on my Samsung Classic 6 watch?
"package names app”
Is more for apps on the phone. But some apps can be installed in both phone and watch. I guess for those apps the ids are same.
Where can I find the app ID list for Samsung Classic 6?
You got to connect to your watch via adb and run commands from your pc
Or u can ask here what ids u looking for. 
It would be a help if you can extend the ap id for Samsung compass. Thank you.
@kozco19k not sure if this is correct but u can try
Com.samsung.android.watch.compass
Hi Knightwing, Yes the link to compass did work, thank you. Where did you locate these AP ID commands?
From google play. Via sharing the link of the app. If the app is installable on my watch. I have a gw 5 pro.
…play.google.com/store/apps/details?id=com.samsung.android.watch.compass
After the =
But like i wrote i could also get it via adb. But i though the google play way is easiest.
The three dot on the top right.
Provided the app says installed on watch.
I appreciate your help. Thank you.
Hi Knightwing, do you know a way to paste and copy the ap id to WFS custom button or is there another way without typing in the command?
Depends the field is pastable like any text field.
Share the ids to your email/whatapp desktop…
Copy from desktop email or whatapp