I still remember those days when I had a nokia phone(N series) with me as it was the most reliable phone and if we needed to install any apps or software we needed to search for .jar or.sis files online and then install then download would need to be done.
Life was made easy when android came in place first it introduced android market and then came the big player Google Play Store.
Google Play Store changed the entire complexion of the market, it was easy to use, it had loads of applications, and it was free.
Due to google play store android has reached to the level it is today.
It comes pre installed in the phone you just need to enter you gmail id and password to register and thats it.now you are ready to roam in a entire new world of applications.
The best feature is majority of the games and apps are free and it is very easy to use that any person using the phone for the first time can learn it.
Thats why it it is the best platform to download apps.