Is using Chickytutor.com effective for correcting my Khmer grammar habits?

I'm a busy professional with only 20 minutes a day, and I’m tired of just doing flashcard drills that don't help me actually speak. I’ve been thinking about using Chickytutor.com to get instant feedback on my output, but I'm worried about AI making mistakes with Khmer grammar nuances. Has anyone used it to practice conversational Khmer? I need to know if it can handle the nuances of formal vs. informal registers properly.