Recipe Book

Recipe Book is a simple and practical Android app for saving and managing cooking recipes. It focuses on clean UI, offline access, and smooth performance, showing how a real-world Android app can be built using modern tools and best practices.

Users can add their own recipes, attach images, and view them anytime without needing an internet connection.

Screenshots

Create Recipe	View Recipe	Recipe List

See all images here. Do check a working example on Youtube

Download Apk

Browse all APK release versions here

Features

• 📖 View a list of saved recipes with images
• 🔍 Read full recipe details (ingredients and steps)
• ➕ Add custom recipes with images from device storage
• 🗂️ Offline-first storage using local database
• ⚡ Smooth UI built with Jetpack Compose
• ♻️ Efficient image loading and caching

Tech Stack

• Language: Kotlin
• UI: Jetpack Compose, Material 3
• Architecture: MVVM + Unidirectional Data Flow
• State Management: StateFlow, immutable UI state
• Navigation: Jetpack Navigation (Compose)
• Dependency Injection: Hilt
• Image Loading: Coil (with caching strategies)
• Local Storage: Room Database
• Async & Background Work: Coroutines, Flow
• Build System: Gradle (Version Catalog)

Technical Challenges & Solutions

1. Avoiding Unnecessary Recompositions

Managing recompositions in complex Compose screens was handled by:

• Passing stable UI state objects
• Using derived state where appropriate
• Separating UI state from business logic in ViewModels

2. Image Caching Strategy

• Coil caching enabled for recipe images to improve scroll performance
• Caching selectively disabled for temporary image previews (e.g. image picker)
• Clear separation between local URIs and persistent image sources

3. Offline-First Architecture

• Room used as the single source of truth
• UI observes Flow streams from the database
• Ensures fast app startup and resilience without network access

4. Atomic Handling of Room and MediaStore Data

• Learned to safely coordinate two data sources: Room (recipe metadata) and MediaStore (images)
• Recipes and their images are saved atomically to avoid partial or inconsistent states
• Images are copied into internal app storage and referenced via internal URIs
• Avoids long-term dependency on system MediaStore URIs, improving reliability and data ownership

Upcoming Features

• 🤖 GenAI-powered auto tagging

  • Veg / Non‑Veg classification
  • Cuisine type (Indian, Afghani, Italian, etc.)
  • Recipe type (Meal, Starter, Dessert)
  • Approximate calorie estimation

• 🌐 Find and import recipes from online sources

• 👨‍🍳 Community features to share recipes and explore others’ creations

Important Links

Email: rahulstech18@gmail.com

GitHub: Profile

LinkedIn: Profile