You spent 10 years on this? Was this like a side project that you paused on for years? 10 years is an absurdly long time to build in the dark. Did you do any

You spent 10 years on this? Was this like a side project that you paused on for years? 10 years is an absurdly long time to build in the dark. Did you do any market testing or let people besides you, your friends or family use it? You could've just wasted a lot of time building something no one wants.