You can set your phone to update apps automatically so you always have the newest versions installed.
Press Play Store.
Slide your finger right starting from the left side of the screen.
Press Auto-update apps.
Press Auto-update apps over Wi-Fi only to turn on the function.
To turn on automatic update of apps using mobile network, press Auto-update apps at any time. Data charges may apply..
Press Do not auto-update apps to turn off the function.
Press the Home key to return to the home screen.