In order for you to read tomorrow's horoscope for you sign, simply click on the gray arrow that you can find next to your sign picture from within the appropriate horoscope within the Discover section of the app. You can:
read yesterday, today and tomorrow daily horoscopes
read last week, this week and next week horoscopes
read last month and this month horoscope
Click on the gray arrows to change the day for example in your daily horoscope.