Google Trends: search phrase 'how to pronounce' increasing sharply over time. Create App for this market in any language. I know users
My customers are English speakers querying pronunciation of foreign words. The bigger market is foreigners querying English pronunciation.Google Trends identifies this query going up in English AND foreign languages. Correct pronunciation very important to foreigners learning English especially business and travel. Have a process which can be implemented by algorithm gives visual and audio cues, works for any language bilaterally.