價格：免費
檔案大小：40 MB
版本需求：系統需求：iOS 10.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
True Tone plays any tone defined by a temperament. True Tone is useful in tuning instruments, or improving intonation of your instrument.
The operation is simple, just swipe your finger to select a tone and press the fork symbol and instantly you will hear a continuous tone sounding.
Feature highlights
• Range of tone approximately A0 - C8
• High accuracy of tone synthesis
• Common waveforms other than sine waves available
• Several display patterns for accidentals
• Transposition possible for instruments with natural key other than C
• Adjustable reference tone A4 in the range 400 - 480 Hz
• Preset temperament collection available
支援平台：iPhone, iPad