IOIO is a board specially designed to work with your Android device. And this Grove - Base Shield for IOIO is an expansion board for IOIO to work with abundant Grove resources. There are 6 ready Grove sockets on the board cevering functions like ADC and I2C. And in this way, all Grove Modules are accessible for the IOIO board. Wanna make some projects with IOIO and need some sensors or display? This Grove - Base Shield for IOIO can bring you this convenience.