Universal app for keeping track of one's work hours, tasks, etc. and create reports for supervisors or customers.
I just switched from Android and I'm reeeally missing Time Recording Pro. Check this app out if you want an example of how to do this really well.
This is something I've considered doing myself, but it would take a lot of time for me to develop given that I'm a complete novice with this sort of thing.
That API is for extensions (Chrome extensions, Firefox extensions). You can only retrieve message count and such.
The "full" API isn't public. That API is what would be needed to build a full application. https://www.quora.com/Does-Quora-have-an-API-What-kind-of-data-is-available