Ulzii Drone
Fingertip Meditation
$1.99
Ulzii is an instrument for fingertip meditation, inspired by Mongolian
throat-singing (khoomei) and the tradition of drone music.
At its core is continuous tuning, free from the twelve equal-tempered Western
scale. Two ribbons let you freely set the pitch of two voices; touching the
central pad shapes the color of that voice's resonance (like a vowel)
depending on where you touch.
The name "Ulzii" comes from the endless knot found in traditional Mongolian
ornamentation — echoing this app's core idea of an unbroken, continuous drone.
- Continuous tuning ribbons: note names are just reference points — slide
your finger to tune freely to anything in between
- Central pad: touch position shapes vocal resonance (overtone color); an
optional VOWELS overlay shows common vowel positions
- Three playing modes: UNISON (locked to voice I), FOLLOW (a delayed echo of
voice I), and ORBIT (an autonomous, ever-moving layer)
- Sleep / meditation timer: 3–30 minutes, gently fading out at a slower
tempo — ideal for bedtime or meditation
Headphones are recommended. This app does not collect or transmit any
personal data or performance data.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Fixed an issue where playing near the screen edges (the pad or tuning
ribbons) could accidentally switch away from the app.
The developer, Keisuke Oki, 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
- Keisuke Oki
- Size
- 5.1 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Keisuke Oki
