Android : How to download .apk file from playstore

Here is the simple procedure to download the .apk file from playstore or from mobile device.

Procedure 1: Downloading from google playstore

Step1 : Browse URL https://play.google.com/store?hl=en
Step2 : Search for your app which you want to download, for example facebook.
Step3 : Select and click on the appropriate facebook app from list available.
Step4 : Copy the URL from address bar as it contains the app package name , see the pic below

Step5: Browse URL http://apps.evozi.com/apk-downloader/
Step6: Paste the copied URL in step4 to textbox as shown below.

Step7: Click on Generate Download link and click on download button as shown with highlighted button in red.