I spent ~1.5 years working on an app that would do just that. I've since put the project on hold: the problem is just so huge that it's very hard to whittle it

I spent ~1.5 years working on an app that would do just that. I've since put the project on hold: the problem is just so huge that it's very hard to whittle it down to "just" an app that can be made within a reasonable amount of time, and have it be useful.