It's really tiny but it made a hell of difference to me. Btw, this app is pure genious. I always forget how much time I spend here or there, and this time tip reminds me.. I'm using it for only 1.5 hours, but I'm already amazed. Much much kudos++..
So here's the little suggestion, not sure if you'll like it:
Replace tid1 line with following:
FormatTime, TimeString, h:mm, Time
To make it in format 9:38 PM.
I can't parse 24:00 hour format. It always takes me a few seconds to figure it out. If I ever went to the army.. I think most people would prefer that and AHK makes it a bit of a chore to change to this format.
The other problem was the the taskbar icon flickered all the time so I commented out the line that, I think, updates the tooltip there:
; this tooltip causes the tray icon to flicker.
;Menu,Tray,Tip,%A_DDDD% %A_DD%. %A_MMMM% %A_YYYY%