Company Thi Nga Nguyen created these great apps:
WhatSticker - Chat Sticker and Icon for WhatsApp Messenger, Best Blur - Create Custom Wallpapers with amazing effect, ChatSticker - Sticker and Chat Icon for Facebook Messenger, WhatsApp, LINE, Viber, Animated Stickers - Dynamic Stickers, Smileys, Emojis, Emoticons for iMessage, Email, MMS, Facebook, Twitter, WhatsApp, Viber, Line, Kik Messages, WallNewYear - Happy New Year Wallpapers & Colorful Backgrounds for Whatsapp, Hangouts, Viber, Christmas Locker - Xmas 2014 & New Year 2015 - Create Beautiful HD Lock Screen Wallpaper, and others..