An orthotic device for insertion into footwear for correcting over pronation or supination of a foot, the orthotic device comprising: an insole comprising a first end, a second end, a first side, a second side, an upper surface, and a lower surface, wherein the upper surface of the insole receives and supports at least a portion of the foot; a removable angle insert attachable to the lower surface of the insole, wherein the removable angle insert increases an angle about the first side of the insole on the medial side to correct over pronation or about the second side of the insole on the lateral side to correct over supination of the foot, wherein the removable angle insert comprises a heel portion attachable to the lower surface of the insole about the first end of the insole, an extension portion that extends from the heel portion and is attachable to the lower surface of the insole along the first side of the insole for pronation or along the second side of the insole for supination, and one or more protrusions along an edge of the removable angle insert; an insert notch in the lower surface of the insole about the first end of the insole and along the first side of the insole for correcting pronation or about the first end of the insole and along the second side of the insole for correcting supination, wherein the insert notch is sized and shaped to at least partially receive the removable angle insert therein; and one or more slots along the lower surface of the insole within the insert notch, wherein the one or more protrusions are configured to mate with the one or more slots to secure the removable angle insert to the lower surface of the insole within the insert notch. an insole comprising a first end, a second end, a first side, a second side, an upper surface, and a lower surface, wherein the upper surface of the insole receives and supports at least a portion of the foot; a removable angle insert attachable to the lower surface of the insole, wherein the removable angle insert increases an angle about the first side of the insole on the medial side to correct over pronation or about the second side of the insole on the lateral side to correct over supination of the foot, wherein the removable angle insert comprises a heel portion attachable to the lower surface of the insole about the first end of the insole, an extension portion that extends from the heel portion and is attachable to the lower surface of the insole along the first side of the insole for pronation or along the second side of the insole for supination, and one or more protrusions along an edge of the removable angle insert; an insert notch in the lower surface of the insole about the first end of the insole and along the first side of the insole for correcting pronation or about the first end of the insole and along the second side of the insole for correcting supination, wherein the insert notch is sized and shaped to at least partially receive the removable angle insert therein; and one or more slots along the lower surface of the insole within the insert notch, wherein the one or more protrusions are configured to mate with the one or more slots to secure the removable angle insert to the lower surface of the insole within the insert notch.