Android applications and games from the Play Store have evolved throughout the years and was once called the Android Market. Officially known as Google Play now, but commonly referred to as the Play Store is Android’s official app store.
Every now and then app and game developers feel generous and they discount their work for free. The Play Store has a system in place that allows these Android apps on sale for free to only be temporary though. However, if you can grab them while they are temporarily free then you’ll have them on your account permanently.
So, if you see a paid app that has gone free then it will be listed here and you should download it quickly. You should also share the page with your friends so they know which apps are on sale for free before the automated system raises the price tag again.