See also: How to Switch Between Google Account in Google Play Store in Samsung Galaxy S3
For certain reason, adding some of Google account also will helps you to separate purchases you've made in Google Play Store. Here you can also knowing the apps you've downloaded using one of your Google account.
How to see my applications on the Play Store apps?
Below are the steps you need to do to know the apps you've downloaded using the Google account currently signed in:
- Go to Apps through Home screen.
- Scroll to Play Store, then tap it.
- If required, switch to the desired Google account you wish to show the apps you've downloaded with it. See how to switch account in the link above.
- Tap the Menu key.
- Tap My Apps.
- The purchased items you've downloaded with the selected Google account will be visible here.
- If you want to show the purchased items in another Google account, then switch to the desired account as you can see in the step #3.
All the downloaded apps will listed here, either they're installed or have been removed. This step will be useful to help you knowing the purchases history on certain Google account. So, hope this helps :)