Smartphone devices are as valuable as there are some useful apps there. So I started wondering if there are electronics/microcontroller-related apps that could be useful in daily work. Let’s see what we can find in an in-app store. First of all, we are interested in free apps. Search on AVR microcontrollers gave me coupe results: AVR Fuse Calculator and Using Atmega128 apps. Let’s see what they are capable of.