價格：免費
檔案大小：26.6 MB
版本需求：需要 iOS 10.2 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
See when you are in tune and make playing with your peers easier. Works great for brass, wood wind and string instruments.
Option to display the frequency so you can fine tune down to 0.01 Hz.
支援平台：iPhone, iPad