Take a look at this wonderfull scientific calculater! This free app is easy to use and suitable for all ages.
We improved the user interface so it will meet exactly your needs.
"This app will enhance your user experience by adding a floating
on-top-widget that will enable you to interact seamlessly with your
social networks and read your favorite content on top of any app -
without switching apps. Additionally, the floating on-top-widget may
display useful offers and free coupons that support our development.
Should you ever become dissatisfied with this widget please let us
know and, of course, it may be easily uninstalled. Thanks for
downloading and enjoy this brand new way of using your phone."