There's definitely a huge need for this- but I think for everyone, not necessarily just those in poverty. From my middle class home town, most people I was familiar with from elementary school seem to be working at restaurants and the like. I could have definitely used a mentor to help me see the possibilities that my parents weren't familiar with. Now that I'm finally developing the self-awareness necessary to really go somewhere (hopefully) I've tried to think on how to help kids realize their potential, but in such a way as to be scalable. While maybe apps could help with self-esteem, it's probably not possible at this point to replace the knowledge and experience of a good mentor with a standalone information system.
I know the frustration I've experienced, so I can only imagine what it's got to be like coming from less- props to you for making it.