Company Anton Sitnikov created these great apps:
Chest Calculator for CR, Random Decks for Clash Royale, Brawl Box Opening Simulator, Map Guide for Fortnite, Looper! Neon balls puzzle, Donut Slices, Weapon Sim For Fortnite, Map Guide for Fallout 76, Map Guide For Apex Legends, Simulator of Brawl Boxes, and others..
