Developer's DescriptionBy Takuya FujiwaraThis app is a really simple tuning meter (tuner).This app is a really simple tuning meter (tuner).It can be used as a chromatic tuner.It supports a lot of musical instruments (8.18Hz - 12543.85Hz).When starting up this app, it begins to input the microphone sound and analyze it.Function- Tuning- Concert pitch change(400 - 490)I would be happy if you could tell me what instrument you are using.The advertisement is displayed once every 3 days.