When you're getting to the heart of your app or software idea to determine what needs to be in your prototype or MVP, you need to remember that any app that requires a bunch of pre-loaded data in order to provider value will be MUCH more expensive to produce. That's because you don't already have the data from the user's actually using your product, so you have to buy it from someone else.
If you're in that place, you haven't gone far enough into your idea to root out the intrinsic value of it. Create something that users want or need regardless of the resulting statistics and metrics, and you will curate the data over time. THEN you can add that value into your app later, and your users will be thrilled that now they can see what you see.