1.) Build a working prototype before you raise the $20k. There is no reason with today's tools that a working prototype not be created before investment (with a

1.) Build a working prototype before you raise the $20k. There is no reason with today's tools that a working prototype not be created before investment (with a few exceptions for moon shots). Also, you do not yet have external pressure. So, cut off your friends, sell your TV, etc. and spend 100% of your time outside of work building a prototype. 2.) He is correct that your costs estimates are low. In India, your expenses will be higher. Unless you're in some remote area with exceptionally low cost of living, the expenses you'll experience in a big city are high. 3.) Don't start with the assumption that you'll be solo. It's just not realistic. No one can run a sizable company on their own. Find a partner, or at least up your cost estimates to include employees. 4.) Marketing: No product markets itself. Marketing and sales take tremendous efforts and should receive the bulk of your spend. Hope this helps.