“No money on advertising is not equivalent to no money on marketing.”
Product creation plays a huge role in marketing. Please don’t forget this fact.
The product is the leading side of marketing, not the doing side of marketing. While the former complements the latter, relying only on the latter will make the process slow to get off the ground.
Even though the doing side helps to get off the ground, only greater products that are relevant to your buyer will take it higher.
Most product developers and tech entrepreneurs still believe that marketing is something you do at the end. It’s not just something to do at the end or a box to check—it must be embedded in your product from the start.

“Don’t find customers for your products, find products for your customers.” Seth Godin