Complex sentence: By 2011, Zomato started coverage in Bangalore, Pune, Chennai, Hyderabad and Ahmedabad and they launched applications for iOS, Android, Windows Phone and BlackBerry devices.
Split into simpler sentences: By 2011, Zomato launched coverage in Bangalore, Pune, Chennai, Hyderabad and Ahmedabad. In the same year, they launched applications for iOS, Android, Windows Phone and BlackBerry devices.