Fendrich's work is notable for its focus on scientific accuracy. He was one of the first science fiction writers to use scientific knowledge to create realistic and plausible stories. His work also reflected his interest in social and political issues. He wrote about the potential dangers of technology, the importance of education, and the need for peace.
Fendrich's work has been translated into many languages. He is considered one of the most important science fiction writers of the early 20th century. His novels and stories continue to be enjoyed by readers around the world.