9Apps is a tool for downloading all kinds of multimedia content directly to your Android: wallpapers, ringtones, and even apps and games (although the latter must be downloaded through Google Play).
From the 9Apps home screen, you can use different filters to find the wallpaper or ringtone you've been looking for, but truth be told, although these filters don't work as well as they should. However, searching by category allows you to quickly find pictures of cute animals or beautiful landscapes, for example.
What should be one of 9Apps' strengths - downloading apps - has actually turned into mediocrity due to a simple problem: apps cannot be downloaded from within the app. Instead, 9Apps will direct you to Google Play, meaning it's not particularly useful. The official Uptodown app, on the other hand, allows direct downloading of APK files.
9Apps is the download portal with both pros and cons. On the one hand, it's good for finding and downloading lots of wallpapers and fun ringtones, but on the other hand, it doesn't allow direct downloading of games and apps.