This is a common problem for developer founders. You have the skills needed to build something cool and you recognize that others might be willing to pay you mo

This is a common problem for developer founders. You have the skills needed to build something cool and you recognize that others might be willing to pay you money to use the thing you built; but you don't have the sales and marketing skills necessary to make it a widespread success. You are also not flush with capital from a VC or angel investor, so you can't just hire what you are missing. All you can really offer is an equity stake in a 'potentially valuable' business. It is very challenging to decide just how much equity you must part with in order to attract the talent you need. Everyone can throw in their two cents without knowing much of the specifics for your particular case. Take any such advice with a grain of salt. The 'right' amount could be anywhere from 10% to half of the company. There are no magic formulas to determine what is best.