We, Vardhman Books have just launched Vardhman OrderBook App! It creates a single page order form so our customers don't have to waste time with redundant back and forth clicks. Our app solves all these problems. It involves checkout with single, quick order popup with a form that the customer needs to fill. Form is fully customizable with our click it layout editor, so you may add any field you need, mark it as required, add related fields and customize layout in it.
It's perfect for our customers. We strive to make everything easy for the app user, so there's no code you need to insert. You can have it running after a few clicks. We're happy to answer any question or help out anyone who needs.