What is the difference between test mode and live mode?

Test mode is free to use and allow you to test your integrations and how Octobat works, but without exposing the Checkout feature to actual live customers. You can test all features, and configure to work according to your business preferences. Live mode is when you are all setup and ready to invoice your customers and let Octobat do the job for you. In live mode legal documents will be created such as invoices and credit notes. Before entering live mode you will have to select the plan fitting your business needs and put down a credit card.