There are many steps involved in building an app from idea to completed product. Some of the steps have to be done in a particular order. It helps to have a process so that you don't forget something crucial. The following is a general checklist that we use for developing an iOS app from scratch.
As a freelancer that works remotely, I need a routine that sees me sitting at my desk first thing in the morning. Here are some things I do:
If you have one prospective customer you have one point of focus, however when you have more than five or six you need to be a juggler. You also need a very good memory. Marketing Consultant Peter Bartlett, explains how the SalesInView app makes him money.
Slack is a great way to communicate with remote teams. You may want to draw freehand from time to time. This how-to shows how to draw in Slack with a Google Chrome plugin.