價格：免費
更新日期：2018-06-12
檔案大小：15 MB
目前版本：2.1
版本需求：需要 iOS 9.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Use the SignalTouch App to find the fundamental frequencies and their harmonic multiples across the keyboard octaves from the very low sub notes to the upper notes.
The app will keep the selected frequency highlighted for easy view.
The default setting for example is OCTAVE C (4) Note A = 440Hz.
Enjoy and Don’t forget to rate :)
支援平台：iPhone