Invoice management deck pop-up

Viraj is a freelance web developer who works with various B2B clients and design agencies on project basis. His tasks involves creating websites on Wordpress and custom domains as well as fixing or enhancing existing web content. He works on hourly basis as well as short and long term project basis. He is facing issues while managing his tasks and generate proper invoices to his client. He wants to automate this process or have a easy to use solution.