A free program for Android, by PierroX.

Czech is the official language of the Czech Republic. It is spoken by more than 10 million people and is historically known as Bohemian. If you are learning it, one of the best ways to improve is by using it as the default language on your phone. This way, you get to read in the said language every day and familiarize yourself with the terminologies.

With Lightning Launcher – Czech, you can set it as the default one on your phone or tablet.

The best thing about this app is you can download and install it for free. This means you won’t need to spend money.