When I first opened Cupid and Psyche, I was not sure if I was going to be able to compare it to The Frog Prince. The main thing to throw me off was the length of the two stories. Cupid and Psyche was so much longer than the Frog Prince. The next thing to make me unsure of their comparisons was the background of the short stories. Cupid and Psyche has a strong Greek background.
In both of these stories, the daughter is a beautiful princess with parents who make their daughters do the right thing no matter how hard it is. In the Frog Prince, the King believes that his daughter should kiss the frog. He wants his daughter to have her ball back but he also wants the right thing for the frog and for the frog to become a human again.
Cupid and Psyche comes from Greek Mythology. This is the biggest difference that I have noticed between it and The Frog Prince. The Grimm Brothers wrote The Frog Prince and they come from Germany. These two cultures are so different that it is hard to imagine two stories that are so related to each other. The Greek myth of Cupid and Psyche has more of a storyline and a stronger motif then The Frog Prince.