# 100Hz — 100Hz tone for easier travel

> 100Hz tone for easier travel (iPhone/iPad app by 午尧 杨.)

- Source: https://appshunter.io/ios/app/100hz/id6779241590 (this page in markdown: same URL + `.md`)
- Developer: [午尧 杨](https://appshunter.io/developer/1682829051)
- Category: Utilities, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 14 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-06-14
- Data updated: 2026-07-25
- User reviews in markdown: https://appshunter.io/ios/app/100hz/id6779241590/reviews.md

## What is 100Hz?

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.


## Version history (last 4 releases)

### 1.4 — 2026-07-18

UI improvements

### 1.3 — 2026-06-20

UI Adjustment.

### 1.2 — 2026-06-15

Improvements.

### 1.1 — 2026-06-14

No release notes.

## More apps by 午尧 杨

- [WiseMate](https://appshunter.io/ios/app/wisemate/id6448351063)
- [The Dolly Zoom](https://appshunter.io/ios/app/the-dolly-zoom/id6744953236)
- [Nearby Chat Pro](https://appshunter.io/ios/app/nearby-chat-pro/id6746174788)
- [Time Guard Plus](https://appshunter.io/ios/app/time-guard-plus/id6746190452)
- [BookKeeping plus](https://appshunter.io/ios/app/bookkeeping-plus/id6747095728)
- [BraceJourney](https://appshunter.io/ios/app/bracejourney/id6749664878)

All apps by 午尧 杨: https://appshunter.io/developer/1682829051

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-25.*