Home Advisor is a lead providing company. You pay Home Advisor and when a client goes to them looking for a contractor you pay HA to get their information and contact them and maybe get to bid the job if the client returns your phone call.
Jobber is a client/job management software. I visit a client. Enter them in Jobber. Send them a quote through Jobber. They can approve it it Jobber. I convert to a job, schedule a date, complete the job (looking at details I recorded in Jobber - or my crew can look at job details). Then I mark it as complete and generate an invoice...either email, text, or if they want a paper copy I'll email to myself, print when I'm at home then mail it. Client can pay through Jobber Payments (they take a card processing fee) or mail me a check (of give a check/cash/card on site).
I then can pull up jobs for the month for sales.tax reporting much easier than I did before. End of year gross income is a snap to pull (or any other stats you want as you go alone).
Even when I give a verbal quote and they accept on the spot, I just add it as a new job. It lists everything on my to-do list.
So, yes, I guess it is a productivity app. But not like Home Advisor. Competing software would be like Arborgold (the historical standby, which doesn't seem to get great reviews but is still used by companies who are used to it), Single Ops (I didn't choose because it seems a better set up for bigger companies), Arbor note, etc... do a search here for "Jobber" - several threads.
Starts at $70/month.