"Umíme česky" is an Android application developed by Marek Šabo. It is a free education and reference app that offers a comprehensive language learning experience for those interested in learning Czech. The app contains various exercises and many categories of Czech grammar.

The app offers innovative games such as the "Robots game," which is a speed racing game, and "Play Ball," which is a tilt-controlled game. Additionally, the app includes "Pilná bee game," a simple touch platform game.

Overall, "Umíme česky" is a well-designed app that provides an engaging and interactive way to learn the Czech language. The app's exercises and games are challenging and fun, making it a great resource for both beginner and intermediate learners of Czech.