This is a good question, but it should be an Ask HN post. At pre-seed, you have no revenue. Your main goals are to develop your product or service to the poin

This is a good question, but it should be an Ask HN post. At pre-seed, you have no revenue. Your main goals are to develop your product or service to the point that it is demonstrable, and to gather as much research and feedback as you can about about the customer and what they find valuable. Your KPIs should be tailored to meet these goals. It really depends on the product or service. You could track meetings, or survey results, or interest/click-through to a landing page, or email addresses, etc. There are tons of resources out there. Read, read, read. Pick KPIs most relevant to motivating you and your team toward your goals. If you do, then angel investors will be impressed.