Audio session
An expo-audio session that plays the 100 Hz tone with fades, a 60-second ring timer and a calm finish screen.
The Expo app built for the web: the 100 Hz session plays, and the in-app motion dots follow a simulated drive.
- Role
- Co-developer, started the app
- Year
- 2026
- Platforms
- Android · iOS
- Stack
- Expo SDK 54
- Expo Router
- Reanimated
- expo-audio
- Kotlin
- i18next
Most apps against motion sickness are paid or full of ads. Serene is free: a short audio session before the trip, and on Android an overlay of dots that moves against the vehicle's acceleration.
My part. 14 of 59 commits: I created the app and built the audio session, the first Motion Cues module (Kotlin service and config plugin), the redesign with the pill tab bar, and the entrance animations and haptics.
At a glance
100 Hz
audio-therapy tone with fade in and out
Source: app
60 s
guided session with a breathing countdown
Source: app
MIT
free and open source
Source: repo
What I built
Therapeutic Tech redesign
The calm visual system with the pill tab bar, entrance animations and haptics.
Credit. Trương Bùi Anh Tuấn is the main contributor (dark mode, accessibility, the production Android overlay and the docs). The Android overlay is native and is not shown here; the screens are from the web target.
