This is more of a social problem than a tech problem, which means you won't know until you actually try. Don't waste your time trying to get people's opinions

This is more of a social problem than a tech problem, which means you won't know until you actually try. Don't waste your time trying to get people's opinions on the idea because nobody knows if it will work. Even if a lot of people say "yeah i would definitely use it" it doesn't mean shit because they haven't actually tried it and once they try it they may realize they don't really need it. Likewise, if people say they don't need it, that also doesn't mean shit, because your audience may be hanging out at a different place than HN. If you are curious, just build it and share the app itself, and then get feedback on that implementation. Sounds like something that one could whip up over a weekend if motivated enough and knows how to web program. Just do it.