call app .? How does the free call app work will I be able to make calls from anywhere for free or only near a wifi service or will I be able to make call from my safari
You would need a smartphone first before anything. A smartphone would be the iphone or any android cell phone. There are many calling apps. One good one is the google voice app. It lets you call anywhere in the United States without any fees and using any of your monthly minutes.
You would need to get a data internet plan from your cell phone in order to use your calling app (Google voice). You can use also use Wi-Fi for the calling app which will let you have unlimited data internet. You would need to be in a Wi-Fi hotspot location or through your home Wi-Fi network.
Safari is just a internet browser. You would need to download a calling app on your cell phone.