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:

Fantastical 2 – See what’s happening today right from your Today Screen

Fantastical 2 has a place in our heart as one of the Best Calendar Apps on iPhone and iPad. Now we have a reason to love it even more. That's because developer flexibits has updated the app to support Notification Center's Today view. Now with a simple swipe from the ...

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 ...