There are millions of designers, motion graphic designers, video editors, web developers, photographers, ... worldwide that use the Adobe Creative Cloud suite throughout the whole day. Paymo (a rival of Zoho Invoice) is the only program that has time tracking built right into Adobe CC. The time tracker shows up as a palet in the programs. This is really handy because you all time that you log inside the program is automatically synchronized with the Paymo program. I think there is a huge market for this. I for one would be really happy with this feature!