-- Database schema
| playstore : App [ TEXT ] , Category [ TEXT ] , Rating [ REAL ] , Reviews [ INTEGER ] , Size [ TEXT ] , Installs [ TEXT ] , Type [ TEXT ] , Price [ TEXT ] , Content Rating [ TEXT ] , Genres [ TEXT ] | user_reviews : App [ TEXT ] user_reviews.App = playstore.App , Translated_Review [ TEXT ] , Sentiment [ TEXT ] , Sentiment_Polarity [ TEXT ] , Sentiment_Subjectivity [ TEXT ] |
-- -- Which 1,000,000,000+ intalls apps has the most no comment reviews?

SELECT T1.App FROM playstore AS T1 INNER JOIN user_reviews AS T2 ON T1.App = T2.App WHERE T1.Installs = '1,000,000+' AND T2.Translated_Review = 'nan' GROUP BY T1.App ORDER BY COUNT(T2.Translated_Review) DESC LIMIT 1;