Twiddl Chromatic Tuner
Music
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improved pitch detection accuracy and responsiveness, especially for quiet low strings and 12-string guitars. Note changes are now smoother and tuning works better in noisy environments.
The developer, Luis Diego Hernandez Arias, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Luis Diego Hernandez Arias
- Size
- 1.3 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Luis Diego Hernandez