TypeDrawing is $2, but it’s pretty awesome. It’s a typographic drawing app, which I didn’t even know existed until I found this little gem of an app. You can create some really artistic looking text on your photos using your finger and the various controls that are in the app.
They have a lot of controls and settings for managing color, outlines, shadows, symbols, text and lot of other stuff. You can really get creative with adding text to your photos using this app.
"iPhone Tip- Apps to Write on Pictures-TypeDrawing"
Reference : online-tech-tips.com