What does the software or service do well? The tool is very organised. I like the way they designed it for first-time users. Most invoicing features you need are found on the left side bar. Its easy to duplicate or clone an invoice. There's the Sales and Expenses overview dashboard that you can see when you are logged-in. You can instantly check what happened in the last 12 months.
What does the software or service not do well? I think the pricing is too hefty for start-up entrepreneurs or solo business owners for the feature of using the invoice tool only. If you need the subscription feature, you need to sign up and pay for that as a different tool. Most business owners prefer or have subscriptions services that they run, so this is the deal breaker for Zoho invoice, I believe. If they integrate the subscription to the invoice, then this is probably one of the most powerful invoice software ever.
What do you wish you had known about the software or service before using? I wish I had known about this tool many years ago as it will greatly help our accounting needs.