Startup Idea: Scheduling and Accounting Program for Self-Employed Individuals

Startup idea to design a software program aiding self-employed individuals, like freelancers or small business owners, to manage scheduling and accounting tasks, proposed features include custom appointment setup, reminders, and payment tracking.

I am a self employed mother I do several things from typing jobs, to housecleaning to babysitting. Sometimes I mis-track payments or accounts or schedules. Even though I do my best to keep reminders set on my phone and by hand at home. A software program that would automatically allow me to set up perimeters of times to do housecleaning or babysitting and allow my clients set up their own appointments within cretin times and send me an email and text when it happens. The program should also track accounts, and payments owed.