In the last decades, citizen science, in which citizen volunteers share what they observe to provide information to the scientific community, has become a new powerful trend in the field of natural science research. Our research group Biorecords, from the Faculty of Science and Institute for Research and Applications of Fuzzy Modeling at the University of Ostrava, is using citizen science to collect occurrence data and pictures of species from the public through a friendly to use and interactive environment of mobile applications. Our applications run species identification using image, occurrence, and environmental data, and beyond that, each of them provides a catalog of species and the option to save user personal records. Currently, three Hunter applications are being run by the Biorecords team: Dragonfly Hunter CZ, Herpeto-Hunter CZ, Orthoptera Hunter CZ, and the fourth application, Mammal Hunter CZ, is just in the process of publication. All three mobile applications are free to download (Android, iOs) and available in English. We can see the bright future of interactive mobile applications providing easy and quick species identification (in the near future with the help of machine learning, image recognition, and fuzzy modeling) for the public in such an attractive, friendly and playful way, while scientists will benefit from a large amount of occurrence data saving a lot of money, time, and effort.