100Hz
100Hz tone for easier travel
Free · Designed for iPad. Not verified for macOS.
HundredHz is a lightweight tool to help ease motion sickness, inspired by public research on low-frequency sound and inner-ear balance. When you feel uneasy in a car, boat, or plane, put on your headphones, pick a sound, and listen for about a minute to relax and ease travel discomfort.
SOUND LIBRARY
All synthesized on-device, clean and precise:
• 100Hz otolith tone (recommended, a research-based low tone)
• 50Hz / 150Hz low tones
• White noise, pink noise (relax, sleep)
• 100Hz + white noise (layered)
GUIDED BREATHING
An optional breathing guide: inhale 4s, hold 2s, exhale 6s, with a ring that scales to your breath. Slow, deep breathing can itself help with nausea.
ADJUSTABLE DURATION
1 / 3 / 5 minutes. Stops automatically, or stop anytime.
SESSION HISTORY
Every listen is logged — see your day streak, total sessions, and minutes.
MOTION-SICKNESS TIPS
Built-in guidance: why motion sickness happens, practical tips to feel better, and notes on the 100Hz research.
THOUGHTFUL DETAILS
• Headphones recommended for better low-frequency reproduction
• A flowing waveform while playing, with a clear Stop button
• Plays through headphones even with the silent switch on
• Stops automatically on a call or when headphones are unplugged
• English and Chinese, following your system language
PLEASE NOTE
HundredHz is a relaxation and comfort aid based on public research. It is not a medical device and is not a substitute for medical diagnosis or treatment. If discomfort persists or is severe, please consult a doctor; stop immediately if you feel unwell while listening.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
UI improvements
The developer, 午尧 杨, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 午尧 杨
- Size
- 14.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 杨午尧