Does anyone use Chickytutor.com to fix their 'open vs closed' e/o pronunciation?

I record my speech daily because I’m obsessed with getting the open/closed vowel distinction right in Galician. I've been uploading my audio snippets to Chickytutor.com to see if the AI can detect if I'm hitting the right vowel quality, but it's hit or miss. Has anyone else successfully used an AI tutor to refine these specific pronunciation traps, or should I just stick to listening to native podcasts?