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: gas-template repository · Development Platform
REAL GENERATED CODE
A snippet from a Expo app the studio shipped
This pattern comes directly from the gas-template codebase, the foundation every Goodspeed app is generated on. The studio generates Expo code like this for every app in the pipeline, not just a hello-world scaffold.
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