The World Leaders Sticker Pack app, developed by Viko Co., is a free Android app that offers sticker packs of your favorite world leaders. The app currently includes stickers of Angela Merkel, Donald Trump, and Vladimir Putin, with the promise of more leaders to be added soon.

The app is easy to use and offers a fun way to spice up your chat life. Simply download the app, select the desired sticker pack, and share it with your friends. The stickers are high-quality and accurately represent each leader's likeness.

Overall, the World Leaders Sticker Pack app is a great addition to any chat app and is perfect for anyone who enjoys using stickers to express themselves.