My productivity app is just todo.txt in one drive using specificaly notepad.exe.
You put .LOG at the top of the new file with a return. Save and close the file.
Every time you reopen the file, the timestamp is append to the file. Add your notes, save, exit notepad. Open it again when you need to update, rinse and repeat.
Nothing I’ve ever tried has been more effective than just keeping this endless file.
Metapad is a nice replacement for Notepad, with a few extra useful features, but don't know if it has the feature you refer to. Likely not, because work in it stopped a while ago. But it is still available. I had used it for some years. Still may in future.
You can also insert a timestamp in notepad.exe simply by pressing F5. (At least it used to be like this - haven't tried on newest versions of Windows).
You put .LOG at the top of the new file with a return. Save and close the file.
Every time you reopen the file, the timestamp is append to the file. Add your notes, save, exit notepad. Open it again when you need to update, rinse and repeat.
Nothing I’ve ever tried has been more effective than just keeping this endless file.