Game-streaming platforms and subscriptions are all the rage right now, with big-name players such as Apple (Arcade), Google (Stadia), and Microsoft (xCloud) all recently launching some sort of effort. Steam Link (still in beta) allows you to play games from your Steam library directly from your Android phone, with the caveat that both your PC and mobile device must be connected to the same network. Check out our guide on how to stream games on your Android or iOS device. Android App
There are a lot of apps out there that pay lip service to security and privacy, but Signal was built from the ground up with the goal of letting people easily communicate without having to worry about being overheard. The Signal app is a complete phone and SMS client replacement (though it works just fine as a standalone app, too) for sending and receiving encrypted calls and messages. A recent update has greatly improved the app's look and feel, proving that security and usability don't have to be at odds.
Weather Underground combines a slick design with a focus on really useful weather information. We particularly like the ability to report weather conditions in your area and the extremely useful comparative forecasts that deftly show how conditions have changed since yesterday. With an accompanying set of useful widgets, it's the best weather app on Android. Droid App