Snapchat is a social media platform that allow you to send and receive message with photos all together.
It also allow the user to filter their pictures automatically with their generator and export the picture on the phone gallery or camera roll.
How to export the picture
Firstly you need to have a Snapchat Application on your smartphone which is already been installed.
Open the Application and snap a picture, or you have already snapped the picture then click on the icon that will shows the images.
After that click on this three (3) dot shown on this image
Click on the "export snap" it will show you where you want to export the image
Then click on "export to Camera Roll"
the image will start to export automatically on the phone gallery