This app was mentioned in 1 comment, with an average of 2.00 upvotes
Hebrew Calendar Widget: https://play.google.com/store/apps/details?id=com.zingosoft.android.hebcal
It's a widget for your home screen, not an app. Shows you the Hebrew date, and how many days to the next Yom Tov, on Friday shows candle lighting times and the Parsha.