Last updated: 2026-06-11
Everything you'll touch while writing app code.
- Page Lifecycle - create, upgrade, rebuild, shutdown
- Display & UI System - containers, text, images, fonts on the 576×288 canvas
- Design Guidelines - typography, spacing, the green canvas
- Device APIs - touchpad taps, swipes, R1 ring, IMU, audio, device/user info, local storage
- Networking -
fetch, theapp.jsonwhitelist, CORS, request flow - Background & Lifecycle - WebView suspension, what survives, what doesn't