Seewald Solutions

So you have a friend who is colorblind... how does the world look to him/her? With this app, you can

Let your children search for the fitting vehicle, ship or animal parts. If all three parts are at th

Based on the photograph of a one-handed pocket watch created by Breguet et fils, Paris, 1810, this s

Ratcheting is a well-known tradition since 1482. It creates lots of noise by turning a wooden ratche