Good app to make children understand the structure of different things, for example where and how to place different components in a bicycle et cetera, in a fun way.
I agree with @jlufer, this app has a way to encourage the children to learn new things and will improve & strengthen their imagination as well.
Personally, I think, this is the type of applications which we must introduce our children with.
@ mobi72 you are very kind dear friend, I appreciate your kind words and the enormous support you give to my searches. thank you very much I wish you a splendid weekend
Wish you a wonderful weekend.