Phillip Torrone, Limor Fried and Collin Cunningham don't ring a bell then you probably need to hand over your geek badge. If, on the other hand, those names immediately make you sit up and pay attention, you maybe excited to hear the trio have just released the first Adafruit-branded app for iOS. Circuit Playground is a reference app for makers, hackers and tinkerers that helps you decipher resistor and capacitor values; calculate resistance, current or voltage; convert decimal, hexadecimal and binary values; and store PDF data sheets for ICs. The app is $2.99, but it comes with a $3 credit at the Adafruit shop, so it's kinda-sorta free. It's available for iPad and iPhone only, but an Android version is in the works. If you're an impatient Google fan, they suggest you check out ElectroDroid which performs many of the same functions and we can confirm is awesome. Check out the video after the break and hit up the source link to get Circuit Playground now.