🧪 15 Best Free APIs Every Jetpack Compose Developer Should Try in 2025
In the world of modern Android development, Jetpack Compose has changed how we design UIs — clean, declarative, and powerful. But no great UI feels complete without real data. Whether you're learning Retrofit or building full-featured apps, you need solid APIs to test and experiment with.
Luckily, there’s a treasure trove of free APIs out there — no payment, no friction, and often no authentication required!
In this article, I’ll walk you through some of the best public APIs you can use in your Jetpack Compose apps, complete with ideas for what kinds of apps you can build around them.
🔍 Why You Need Free APIs in Jetpack Compose Projects
When you’re learning or testing:
Setting up a backend from scratch can be time-consuming — especially when all you need is real-world data to start building your UI.
- You need realistic data (users, products, weather, etc.).
- You want to practice Retrofit, Room, Hilt, and more in a real-world scenario.
- That’s where these APIs come in. Plug them in, and get going!
🚀 Top Free APIs for Android Developers (No Auth Required)
1. JSONPlaceholder – Perfect for Beginners
URL: https://jsonplaceholder.typicode.com/
This is the go-to API for beginners. Fake users, posts, comments, and todos — great for learning Retrofit, RecyclerViews, and even pagination.
Project Ideas:
- Social media feed clone
- Todo list app
2. TheMealDB – Free Recipe API
URL: https://www.themealdb.com/api/json/v1/1/
This is gold if you’re building a recipe app using Jetpack Compose. It provides meals, ingredients, area, and even images.
Project Idea:
3. REST Countries – Country Info and Flags
URL: https://restcountries.com/v3.1/all
Get detailed information about all countries: name, capital, population, flag URL, currency, and more.
Project Idea:
- Country Explorer App with Dark Mode & Search
4. Fake Store API – E-commerce Testing
URL: https://fakestoreapi.com/
Simulates a real store: product listings, categories, cart system, and more. A great choice if you're experimenting with modern shopping app layouts, like creating your own Flipkart- or Amazon-style interface.
Project Idea:
- E-commerce UI Clone in Jetpack Compose
5. Cat & Dog Image APIs
- Cat: https://api.thecatapi.com/v1/images/search
- Dog: https://dog.ceo/api/breeds/image/random
Perfect for practicing lazy loading images and shimmer effects.
Project Idea:
- Cute Pet Viewer App
6. Dictionary API – Word Meaning & Pronunciation
URL: https://api.dictionaryapi.dev/api/v2/entries/en/<word>
Supports definitions, phonetics, parts of speech, and example usage.
Project Idea:
Dictionary App with Text-to-Speech in Jetpack Compose
7. Quotable API – Inspirational Quotes
URL: https://api.quotable.io/random
Simple yet effective for quote apps.
Project Idea:
- Daily Motivation Quote App with Jetpack Compose Animation
8. Bored API – A Creative Way to Find New Hobbies
URL: https://www.boredapi.com/api/activity
Generates activity suggestions. Fun, random, and quirky.
Project Idea:
- Boredom Buster App
9. Open Trivia API – Add Brain-Boosting Questions to Your App
URL: https://opentdb.com/api.php?amount=10
Free trivia questions with categories and difficulty levels.
Project Idea:
- Trivia App using Jetpack Compose and ViewModel
10. PokeAPI – Pokémon Data
URL: https://pokeapi.co/api/v2/
If you’re a fan of Pokémon, this API gives you access to types, moves, images, and more.
Project Idea:
- Pokémon Dex App with Jetpack Compose UI
🔐 APIs That Need a Free API Key
These APIs require a free signup, but they’re still great:
11. OpenWeatherMap
- Real-time weather data and forecasts
- Signup at openweathermap.org
Use Case: Weather App with dark/light mode and icons
12. News API
- Latest news headlines from multiple sources
- https://newsapi.org
Use Case: News Feed App with categories and search
13. NASA API
From daily space photos to images captured by Mars rovers, NASA’s API offers stunning content for any space enthusiast’s app.
- https://api.nasa.gov
Use Case: NASA Image Viewer or Space Facts App
14. CoinGecko API
- Cryptocurrency prices, trends, and coins data
- https://www.coingecko.com/en/api
Use Case: Crypto Price Tracker App
15. GNews or ContextualWeb APIs
- Search news articles and blogs
- https://gnews.io/
🧑💻 Jetpack Compose + API: Best Practices
When integrating any API in your Jetpack Compose project, follow these best practices:
- Use Retrofit for HTTP calls
- Use Hilt for dependency injection
- Cache data using Room DB
- Display loading states with shimmer effects
- Wrap your UI logic in ViewModel with proper state management
💡 Final Thoughts
You don’t need to wait for your backend to start building amazing apps. These free APIs are perfect for learning, prototyping, and even building full-fledged portfolio apps with Jetpack Compose.
Whether it’s weather, recipes, trivia, or e-commerce — plug in one of these APIs and start building today.
Happy coding! 🚀