Here’s a really good reason why you need an app landing page:
Have you looked at your iPhone’s App Store lately? How about Google Play?
I’ve seen landfills with better curation.
With more than two million apps available on each store, people have a much better chance of finding a pearl in an oyster than randomly stumbling upon your app. No matter how appealing it is—no matter how entertaining or even life-changing—most people won’t discover it without a robust marketing campaign.