Smart Siddur knows what the current prayer is. Thus, if you open the app at 8:00 am, it automatically displays Shacharit, and if you open the app at 3:00 pm it automatically displays Mincha.
Additionally, the app knows what day it is. For instance, if you open the app on Rosh Chodesh it displays the prayers for 'Hallel', and if you open the app during the summer it automatically displays 'Morid Hatal' in the Amida.
Furthermore, instead of having to scroll through pages, the app displays the relevant prayers on one page with a beautiful and simplistic design. All you have to do is scroll down to continue praying. If you want to go straight to a specific prayer use the index at the bottom of the page. To make the index disappear or reappear simply tap on the screen.
In essence, the app brings 21st century technology to the antiquated praying industry. The app makes the praying process far more efficient, beautiful and convenient.