Android:

 

Step 1: Click the icon in the bottom-right corner of your screen.

Android1.jpg

Step 2: Click "Add page to"

Android2.jpg

Step 3: Click "Home screen"

Android3.jpg

Step 4: Click "Add"

Android4.jpg

Step 5: Click "Add" again

Android5.jpg

iPhone:

 

Step 1: Click the icon in the bottom-center of your screen.

IMG_6241.2.png

Step 2: Click "Add to Home Screen"

IMG_6246(1).png

Step 3: Click "Add"

IMG_6245.2.png