How do you add text to a picture?
Pretty much any photoshop or picture editing type program. Alot off apps will let you add text to a picture too.
get an app that has that feature
You use a photo editing program to add text to a picture. An example of a photo editing program that you can use is Photoshop. Alternatively, you can use "word art" if you are using a Microsoft office program.
Pic Art on the app store