There are many languages in the world. That's why you can find many different dictionaries. But the most popular dictionaries (i.e. the dictionaries that have more than 100 million downloads) are usually built for other languages. On the other hand, the Czech language is very small and it's similar to the Slovak language. However, when you have an English to Czech dictionary installed on your Android device, you'll have access to a vast database of translations. In addition to that, the application also allows you to choose between multiple translations. So, whether you want to know more about Czech or English, you will always have a dictionary to choose from.