There is probably something here of interest for everyone. From a modded YouTube and Spotify experience, to faking your location, viewing your own photos and videos with TikTok-like interface, skipping ads, seeing through your apps with the camera to avoid obstacles while walking, and more.
Yes, the Google Play Store is not the be-all and end-all of Android apps by a long shot. This video gives a taste of some interesting apps that you won’t find there. For various reasons, these apps are not published on the official App Store.