I haven't gotten far into using it yet myself, but gave you looked at Likewise? It's an app designed to act as a whole "if you like W then try XYZ!" thing. It has sections for movies and tv as well as books. Have a look - hopefully that's useful to you! Source: over 1 year ago

So I’ve been using this App called LIKEWISE. It’s been great so far because like Reddit it’s a community of users where you can ask users for movie and TV show recommendations and it displays what streaming apps are available for you to watch it from. I’ve discovered a lot of great movies and shows through this app however I haven’t been able to find a music recommendation app equivalent to this and I was... Source: about 2 years ago

The problem of scale for profitability from ads is certainly there. You could look to use something like admob to start with to make some money back (although the earnings likely will not cover with cost of marketing, without scale). Source: over 1 year ago

1. AdMob Google is the No 1 player in the mobile advertising market. It was already the largest online advertising company when it acquired AdMob. AdMob makes earning revenue easy with in-app ads, actionable insights, and powerful, easy-to-use tools that grow mobile apps. - Source: dev.to / almost 2 years ago

Use online services, such as Google AdMob, for filtering and sorting in-app ads. Source: over 2 years ago

There are different ways to monetize with your Flutter app. You can make users pay to download it, you can have in-app purchase plans, you can let users subscribe using recurring payments to use all the features, or you can show ads to your users. In this article, Dhruv Nakum teaches you how to integrate AdMob into your app. - Source: dev.to / over 2 years ago