Cims

🏔️ What is Cims?

Cims is a mobile app to track your mountain summits and join hiking challenges. Users can:

• Log mountain summits and view their progress
• Join curated regional hiking challenges (Catalonia, GR-20, Alps…)
• Organize group hikes via Plans and coordinate through Chat
• Earn points based on mountain difficulty
• Climb the rankings and celebrate your achievements

📁 Monorepo Structure

This is a Yarn workspaces monorepo containing:

100cims/
├── packages/
│   ├── app/     # React Native mobile app (Expo)
│   └── api/     # Backend API (Next.js + Elysia)
├── package.json  # Root workspace configuration
└── README.md     # This file

Packages

• packages/app - Mobile application built with Expo and React Native
• packages/api - Backend API built with Next.js and Elysia

🧑‍💻 Getting Started

Prerequisites

• Node.js >= 18.0.0
• Yarn 1.22.22
• PostgreSQL (for API)
• Expo Go app (for mobile development)

Quick Start

1. Clone and install dependencies:

git clone https://github.com/expofast/100cims.git
cd 100cims
yarn install

2. Set up environment variables:

   • Copy packages/app/.env.example to packages/app/.env.local
   • Copy packages/api/.env.example to packages/api/.env.local
   • Fill in the required values (see package READMEs for details)

3. Start development:

# Terminal 1: Start the API server
yarn dev:api

# Terminal 2: Start the mobile app
yarn dev:app

🎯 Development Workflow

Workspace Commands

# Run commands in specific packages
yarn app <command>      # Run command in mobile app
yarn api <command>      # Run command in API

# Development servers
yarn dev:app            # Start Expo dev server
yarn dev:api            # Start Next.js dev server

# Build commands
yarn build:app          # Build mobile app for production
yarn build:api          # Build API for production

# Linting and type-checking
yarn lint               # Run ESLint on all packages
yarn type-check         # Run TypeScript checks

Package-Specific Commands

See individual package READMEs for detailed commands:

• Mobile App Commands
• API Commands

🛠️ Tech Stack

Monorepo & Tooling

• Yarn Workspaces - Dependency management
• TypeScript 5 - Type safety across all packages
• ESLint + Prettier - Code quality and formatting
• Git - Version control

Mobile App (packages/app)

• Expo SDK 55 - React Native development platform
• React Native 0.83 - Mobile framework (new architecture enabled)
• expo-router 6 - File-based navigation
• NativeWind 4 - Tailwind CSS for React Native
• React Query 5 - Server state management
• OpenAPI TypeScript - Type-safe API client
• React Intl - Internationalization (en, ca, es)
• React Native Maps - Mountain location mapping
• Expo Auth - Google & Apple OAuth
• Analytics - reactanalytics.app

Backend API (packages/api)

• Next.js 15 - React framework (App Router)
• Elysia 1.4 - Fast TypeScript API framework
• Drizzle ORM - Type-safe SQL toolkit
• PostgreSQL - Relational database
• AWS S3 - Image storage (avatars, summit photos)
• Google Sheets API - Error/suggestion logging
• JWT - Authentication & authorization
• Swagger - API documentation

🔐 Authentication

The app supports both Google and Apple sign-in via OAuth 2.0.

• Backend validates tokens and issues JWTs
• Protected API routes require valid JWT bearer tokens
• See API Authentication docs for details

🌍 Internationalization

Cims supports three languages:

• 🇬🇧 English (en)
• 🇪🇸 Catalan (ca)
• 🇪🇸 Spanish (es)

Translations are managed with FormatJS. See app README for update workflow.

📦 Try the App

• Cims for iOS
• Cims for Android

🚀 Deployment

• Mobile App: Deployed via EAS Build (Expo Application Services)
• Backend API: Deployed on Railway from packages/api/Dockerfile

📊 Analytics

This project uses reactanalytics.app for privacy-focused mobile analytics.

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Made with ❤️ by @jvidalv

🖼️ Media