clock weather widget for phone

[AC Question]

hi i have a phone that has a nice clock and weather widget on the home page of my phone. i would like to find this for my son's phone, but i am new to phones and can't seem to locate where to find it. are these proprietary to the phone or are they made like an app and offered on google's store? i did find several similar apps like this offered online, but he sites did not look legit to me.

this is what i am looking for;

www.androidwidgets.net/wp-content/uploads/2012/07/weather-widget-clock.jpeg