Build apps with Expo
Expo manages the build pipeline, native module registry, and over-the-air update channel for every Goodspeed app. Goodspeed generates Expo as a standard part of every app, so the output is a working codebase from day one, not a scaffold you have to finish yourself.
WHAT GETS GENERATED
Built into every Expo build
Every app Goodspeed generates with Expo includes these production-ready patterns, wired together from the first build.
| Item | Description | Strength |
|---|---|---|
| app.config.js bridging gas.config.ts | A generated app.config.js reads from gas.config.ts and writes the app name, bundle ID, scheme, splash, and icon into the Expo config object at build time. | Configuration |
| eas.json with dev/staging/production profiles | Three EAS Build profiles: development (development client), staging (internal distribution), and production (store submit). | Build |
| Expo SDK packages throughout package.json | expo-notifications, expo-secure-store, expo-localization, expo-device, expo-image-picker, and expo-camera are version-locked to the SDK. | Dependencies |
| EAS Update channel wired | gasConfig.app.updateBranch resolves at runtime from EXPO_PUBLIC_RELEASE_CHANNEL env var, controlling which OTA channel the app subscribes to. | Deploy |
| MinVersionGate component | A MinVersionGate screen blocks users on stale runtimes and shows an update prompt, using gasConfig.app.minRuntimeVersion and gasConfig.app.appStoreUrl. | Reliability |
| Expo Go deep-link scheme | gasConfig.app.scheme registers the custom URL scheme used for OAuth redirect URIs, deep links from email, and universal link fallbacks. | Navigation |
Source: the Goodspeed generation pipeline · Development Platform
REAL GENERATED CODE
A snippet from a Expo app the studio shipped
This pattern comes straight out of the production groundwork every Goodspeed app is generated on. The studio generates Expo code like this for every app in the pipeline, not a hello-world sample you have to grow into a real app.
Runtime channel
// gas.config.ts: OTA update branch from env app: { slug: 'my-app', version: '1.0.0', scheme: 'my-app', minRuntimeVersion: '1.0.0', updateBranch: (process.env.EXPO_PUBLIC_RELEASE_CHANNEL ?? 'production') as 'preview' | 'staging' | 'production', },
Today's log
USE CASES BUILT ON EXPO
Where this stack ships
These app types use Expo as part of the generated stack. Each link goes to a full spec page with capabilities, scored ideas, and a pipeline walkthrough.
- Build a Fitness Tracker appBuilding a fitness tracker means wiring together daily logging, progress charts, Apple Health, and push reminders. Goodspeed generates all of that in a single build, not a patchwork of tutorials. The FITNESS TRACKER APP
- Build a Habit Tracker appHabit trackers live or die on the loop: cue, routine, reward. Goodspeed generates a complete React Native habit tracker with streaks, reminders, and progress visualization, backed by Supabase so your HABIT TRACKER APP
- Build a Meditation App appMeditation apps need guided audio, session tracking, and the kind of streak mechanics that make a daily habit stick. Goodspeed generates all three, including a guided session player, a mindfulness jouMEDITATION APP
- Build a Meal Planner appMeal planner apps stall at the same place: you can log a meal but the app won't generate a shopping list or track your targets across the week. Goodspeed generates the full stack, recipes to pantry syMEAL PLANNER APP
- Build a Recipe Organizer appRecipe apps that survive in the App Store do more than display cards. They index, scale, substitute, and remember what worked. Goodspeed generates a complete recipe organizer with ingredient scaling, RECIPE APP