PCalc if one of the best calculator apps available for iPhone and iPad. Now it presents a quick access calculator to the Today screen. This widget is just one facet of the premium calculator app. If you find yourself constantly making calculations, unit conversions, even solving scientific equations, PCalc is the widgetized app you need.

PCalc is just one of our favorite widgets for iPhone and iPad. We’ve collected all of our favorites here. And if you’d like to see more of our top app selections in different categories, just head on over to our Best Apps Series.

PCalcTLA Systems Ltd.Utilities$9.99Download

Here are a couple of our other picks of the best widgets for iPhone and iPad:

ETA – The quickest way to navigate to your favorite places

Short for Estimated Time of Arrival, ETA puts the drive time to your favorite places in Notification Center and on your Apple Watch. You can add places you visit often from within the ETA app on your iPhone. Then once the widget is enabled you'll have these shown for quick ...

Pedometer++ A simple iPhone and Apple Watch app to track your steps

Want to track your daily exercise? Pedometer++ does just that by recording your daily steps and even the number of floors your climbed (on iPhone 6 and 6 Plus). An included Today Screen widget will show you today’s progress in Notification Center. The developer has also included a handy Apple ...