Monotype’s Flipfont™ changes the user interface font on your phone. After installing this app, go to 'Settings > Display > Font(Font Style)' menu to change the font.

BST LaLaLand
This typeface has a girly and playful shape and is designed with a lively concept as if it were dancing. It has a narrow body, and the uppercase letters are neat and the lowercase letters are free. ♨ has a girl and ♭ has a boy image.
License
You are allowed to use this font only on the device you have installed, so contact us at [email protected] to use it for other purposes.