Support both iPhone and iPad version. 18 knots included: ⁃ Double Knot ⁃ Four In Hand ⁃ Windsor ⁃ Half Windsor ⁃ Atlantic ⁃ At Andrew ⁃ Cross Knot ⁃ Double Cross Knot ⁃ Kelvin ⁃ Oriental ⁃ Bow Tie ⁃ Pratt ⁃ Cavendish ⁃ Grantchester ⁃ Plattsburgh ⁃ Hanover ⁃ Balthus ⁃ Nicky Don’t worry any more when you want to tie a suitable knot with Pocket Tie Guide.