In this chapter, we learned how to easily bring multithreading to our apps. RxJava provides an extremely useful tool for this: Schedulers. Schedulers come with a variety of specific optimized scenarios and they free us from StrictMode violations and blocking I/O functions. We can now approach memory access and network access in an easy, reactive way and keep a consistent approach all over the app.

In the next chapter, we will raise the stakes and create a real-world app that fetches data from different remote sources using the REST API library by Square, Retrofit, and to create a complex material design UI.