I have received the toilet trainer yesterday. He likes good at first to me. My son has not tried it, so I can not evaluate the practice.
But be careful when assembling !!
I have not followed the order of Monatgeanleitung. If you can grow the side stand (legs) upside down to the Scales no longer secure. A decrease in the side stand is not possible or probable then breaks the fastening pin, the side stand and toilet seat together. This happened to me.
The description can be the toilet seat without legs / stage use is misleading because when the legs are grown once, you can not back it abnehemn without the above fixing pins to destroy. Ie. One with, one without, that's it.
But I recommend to first assessment nevertheless the toilet trainer, because he thinks visually what he promises.