Roblox Jailbreak features vehicles, collectibles, and other items that can be be traded between players. Item values may change over time as the game's trading market evolves. JB Values App includes item value listings and a trading value calculator for Roblox Jailbreak on iOS. The calculator uses the values available within the app to estimate item worth. The app focuses on Roblox Jailbreak trading values and item worth calculations. It contains value listings and calculator features for reviewing different trade combinations.