Description provided by OptiLingo (I have not yet tried this service myself):
"OptiLingo is a hands-free language learning app that prioritizes learning Chinese through speaking rather than typing or translating words. It combines spaced repetition systems and the most high-frequency words and phrases, so you can quickly learn what you need to talk like a native speaker.
The app provides 100 hours of Chinese lessons that cover over 1500 must-learn phrases that you’ll start learning from the first day. All without any boring memorization or drilling.
Subscription starts at $5.99 per month for full access to the platforms 20 languages for the year. Try your first lesson for free. "