Health
Phone Fall Detection
Detects a likely fall and alerts family if there’s no response
Advanced48h2–4
React NativeMotion sensorsSMS API
17/20Outdoor Worker Heat and Hydration Alert
Get heat-risk alerts and water break reminders based on local conditions.
Beginner10h1–2 people17/20 fit
Build Outdoor Worker Heat and Hydration Alert for construction and delivery workers in ~10h with 1–2 people. Stack: React Native + Weather API + Push notifications.
Why it wins: Health and climate impact together.
Build flow
01 · Problem
Heat stress injures outdoor workers who keep working through dangerous temperatures.
02 · Solution
Combine temperature and humidity into a heat index, send break reminders by risk level and let supervisors see team check-ins.
03 · Build
- 1Fetch weather
- 2Compute heat index
- 3Schedule reminders
- 4Supervisor view
04 · Demo
Simulate a hot afternoon and show escalating reminders.
MVP checklist
- Heat index
- Break reminders
- Team check-ins
- Multilingual alerts
Tech stack
| Tech | Role | |
|---|---|---|
| React Native | Mobile app | Mobile |
| Weather API | Weather data | API |
| Push notifications | Tooling | Tool |
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