Ridmik Keyboard contains in-app purchases. Please check the pricing plan as below: Item Price $0.99-$0.99 RGB Basic Theme-$0.99 Macbook Silver Theme-$1.99 Macbook Silver Theme-$1.99 Sleepy Orange Theme-$2.99 Retro RGB Theme-$1.99 Soft Dark Theme-$0.99 Monteverde Theme-$2.99 Cherry Milkshake Theme-$2.99 Petroica Pink Theme-$2.99