Another nice German review by Tim of appleme.de. He says:

Die Ergebnisse der App lassen sich echt sehen und der Effekt wirkt nicht nur bei fotografierten Städten wunder.

Through the wonders of automated translation powered by Google this reads as:

The results of the app can really see and feel the effect is wonderful not only photographed cities.

Thanks Google, makes almost sense! 😉
Read the full review at http://appleme.de/2013/10/tiltshift-bilder-mit-miniatureffekt-versehen/.