Sona Timpani Tuner

Sona, Timpani tuning by resonance.
The app uses the principle of resonance to tune timpani. It enables fast, precise and quiet tuning even in noisy environments. Timpanists use Sona for tuning before concerts, retuning between pieces, setting up tuning indicators and clearing heads.
Note: The principle of resonance tuning only works in conjunction with an external loudspeaker.

TimpToneAnalyser
The app analyses the tone of the timpano using a frequency spectrum and determines the fundamental and overtones.