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.

PCalc - The Best CalculatorTLA Systems Ltd.Utilities$9.99Download

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

Music Launcher – The fastest way to start listening to your music

The release of the Apple Music service has gotten us using this Music Launcher widget a lot. It provides a quick way to start playing music without even opening an app. Music Launcher is made by the same fine folks that brought us the Launcher widget. Music Launcher takes the ...

Thessa – Control your Nest Thermostat from your iPhone Today Screen

Thessa is a new widget that will let you interact with your Nest Thermostat right from the Today Screen. Without even unlocking your iPhone, simply slide down from the top of screen and see and change your home temperature. The app cleverly displays temperature interval buttons. So it's easy to ...