Disclosed is a removable airway appliance for guiding and developing the lower and upper jaws forward. The removable airway appliance may include an anterior acrylic section having a specified amount of the palate/roof of the mouth and lingual side/inside of top front teeth to direct the forces of development, a posterior acrylic section providing retention over the primary/baby molars, expansion screws set at different angles for up/down and side/side growth and development, and clasps for retention in case if permanent teeth are present. On the horizontal axis the screws can be positioned flat at a small angle or at a steeper angle to help direct the direction of growth and development of the upper and lower jawbones, while the side-to-side directs the amount of increased width of the arch.