Contractor Sight

I built my app because for the last 20 years I was a carpenter who ran a contracting business. After I lost my leg from a car accident I decided to try my hand at software. So, when I designed Contractor Sight, I built it with the last 20 years of my life in mind. I wanted an app that solved all the issues I kept running into, the mistakes I made and the problems I encountered. Now, I think I'm on to something but, I need some help. I need testers, I need advice and I need constructive critisism. So, let me know, what else does my app need to be successful? What problems have you entrepeneuers ran into over the years? Also, download my app, try it out and please leave some feedback. Thank you for your time.