Unlike the offline emulators, you don’t need to download or install it in order to use it. An Android Emulator for PC replicates a browser or an Android App, on a defined operating system (like Windows, Mac). Perform live interactive testing or Appium automated cross browser testing on a wide range of android browser emulators including both android tablet and mobile browsers. Redfinger Cloud Emulator for Android Oreo, Nougat, Marshmallow, Lollipop, Kitkat and Jelly Bean. The Android SDK includes a virtual mobile device emulator that runs on your computer.
But if we want to use android apps on pc without any emulator so than we need to use android apps online.