by Quantum Labs
Already speak quite good but still have a problem with czech crazy grammar? This application can finally help you. Specify your own test to improve exactly what you need to. Ideal for short test during the way to work or school. Also includes simple cheat sheets.
for intermediate/advanced students of the Czech language — This app is for students who already know some Czech but need to finesse their grammar. I love the UI, very colorful so it really sticks in my brain.