We need an mobile phone app for our billing portal" mr [url removed, login to view]" ( Please visit the site if you want to know more about functionality of the website.
This app should also provide them with the functionality to generate invoices ..
The invoice/receipt need to be emailed to the customer.
Our clients should be able to login and create invoices Via New Application ( Android and IOS )
We already have a business website/portal and this app should integrate with that. ( Which free invoice generating website)