Expert App Developer

I need an app developed for my business that needs to be finished in a week.
Please see websites like instant scripts, irejuvenation, and clinico for examples. I will need an app similar to this.

Will pay once app is finished. Will continue to pay minimal amount for maintenance of the app.
Happy to discuss requirements online via video and will only pay through PayPal after app has been finished.
If not amenable to all these conditions, please do not message as it takes time to go through every application.