Twiddl Chromatic Tuner

Twiddl is a focused chromatic tuner for iPhone. Open it and play. Twiddl starts listening immediately.

Features:

• Chromatic tuning from A0 through C8
• Fluid, continuous pitch feedback
• Automatic listening when the app opens
• Clear note, octave, frequency, and cents readouts
• Adjustable concert pitch from A4 = 430–450 Hz
• Accessibility labels and Reduce Motion support

Private by design:

• Audio is analyzed only on your iPhone
• Nothing is recorded, saved, or uploaded
• No account, advertising, analytics, or tracking

Twiddl began as the tuner I wanted for myself. I’m sharing it in case it feels better to someone else, too.

This tuner is free, and it will stay free.