Nintendo DSi Instrument Tuner

Nintendo DSi Instrument Tuner is, as the title suggests, a DSiWare application that helps the user to tune instruments. This can be done in one of two ways: the application can play a sample tone the user can compare to, or the user can actually play their instrument into the Nintendo DSi's built-in microphone to have the application automatically judge.

There is also a game included: Tuner Fight, loosely based on the classic Nintendo Entertainment System game Balloon Fight. In this game, balloons rise from pipes, each having a note on them. The player must make a tone into the microphone that matches the pitch of the notes on the balloons to pop them.