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FastAPI VS Expo

Compare FastAPI VS Expo and see what are their differences

FastAPI logo FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

Expo logo Expo

The fastest way to build an iOS and Android app ๐Ÿ“ฑ
  • FastAPI Landing page
    Landing page //
    2023-05-14
  • Expo Landing page
    Landing page //
    2023-05-11

FastAPI features and specs

  • High Performance
    Built on Starlette and Pydantic, FastAPI is one of the fastest frameworks for Python, providing high performance due to its asynchronous request handling.
  • Automatic Interactive API Documentation
    FastAPI automatically generates interactive API documentation via Swagger UI and ReDoc, which are very helpful for development and testing.
  • Type Checking and Validation
    With Pydantic models and Python type hints, FastAPI provides automatic data validation and type checking, reducing the chance of runtime errors.
  • Ease of Use
    Its syntax and design make it easy to learn for Python developers, offering a smooth development experience while reducing boilerplate code.
  • Asynchronous Support
    FastAPI supports asynchronous programming, allowing for better performance for I/O-bound operations, making it optimal for handling many simultaneous connections.
  • Extensive Documentation
    It has comprehensive and well-structured documentation, which is very useful for both beginners and advanced users.
  • Community and Ecosystem
    FastAPI has a growing community and ecosystem, with many plugins and integrations available to extend its functionality.

Possible disadvantages of FastAPI

  • Learning Curve for Asynchronous Programming
    Although FastAPI itself is easy to learn, grasping the concepts of asynchronous programming in Python can be challenging for beginners.
  • Complex Dependencies
    Using Pydantic for advanced validation can make the request models complex, requiring a deeper understanding of Pydantic and its functionalities.
  • Early Stage Libraries
    Some third-party libraries and extensions specifically tailored for FastAPI might still be in early stages of development and lack long-term stability.
  • Limited Real-World Examples
    Although the documentation is extensive, there might be limited real-world examples and case studies readily available compared to more mature frameworks.
  • Deployment Complexity
    Deploying FastAPI applications might be more complex in comparison to traditional synchronous frameworks, mainly due to the need for asynchronous server setups.

Expo features and specs

  • Ease of Use
    Expo simplifies the development process by providing a managed workflow that handles configuration and builds, allowing developers to focus on coding.
  • Cross-Platform Development
    Expo enables developers to write code once and deploy it on both iOS and Android platforms, ensuring a consistent user experience across devices.
  • Pre-Built Components
    Expo offers a library of pre-built components and APIs that streamline the development process and reduce the time needed to implement common functionalities.
  • Over-the-Air Updates
    Developers can push updates to users in real-time without needing to go through the app store review process, facilitating quick bug fixes and feature releases.
  • Strong Community Support
    Expo has a vibrant and active developer community, offering a wealth of resources, tutorials, and third-party packages to assist developers.
  • Integrated Development Environment
    Expo provides tools like Expo CLI and Expo Go that make it easier to build, test, and debug applications, particularly for newcomers to mobile app development.

Possible disadvantages of Expo

  • Custom Native Code Limitations
    Expo's managed workflow restricts the use of custom native code, limiting developers when they need to integrate with third-party native libraries not supported by Expo.
  • Larger App Size
    Expo includes additional libraries and dependencies by default, which can result in a larger application size compared to custom builds.
  • Performance Overhead
    The abstraction added by Expo can introduce performance overhead, making it less suitable for highly performance-sensitive applications.
  • Dependency on Expo's Updates
    Developers are dependent on Expo's update cycle for bug fixes and new features, which may not always align with their project timelines.
  • Limited Configuration Options
    Expo's managed workflow abstracts many configurations for build processes, which can be a hindrance for developers needing granular control over app settings.
  • Ejection Complexity
    Ejecting from the managed workflow to a bare workflow for more customization can be complex and time-consuming, potentially negating some benefits of using Expo.

Analysis of FastAPI

Overall verdict

  • FastAPI is widely regarded as a good choice, especially for applications that require high performance, scalability, and modern Python features. It is suitable for both simple and complex projects, making it a versatile tool in the web development ecosystem.

Why this product is good

  • FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. It is built on top of Starlette for web framework capabilities and Pydantic for data validation and settings management. FastAPI is known for its excellent performance, automatic generation of interactive API documentation (with Swagger and Redoc), and support for asynchronous programming. Developers appreciate its ease of use, detailed documentation, and helpful error messages.

Recommended for

  • Developers building RESTful APIs
  • Teams looking for a high-performance ASGI-based web framework
  • Projects that require asynchronous programming capabilities
  • Applications needing automatic generation of interactive API documentation
  • Python developers who prefer utilizing type hints for code clarity and validation

Analysis of Expo

Overall verdict

  • Expo is a solid choice for developers looking to quickly build and deploy mobile applications using React Native. Its ease of use and comprehensive toolset make it particularly attractive for rapid prototyping and development of small to medium apps. However, some advanced native functionalities might require ejecting from Expo, which can introduce additional complexities.

Why this product is good

  • Ease of use
    Expo is known for its user-friendly interface that allows developers to quickly prototype and build apps with React Native without needing to set up native development environments.
  • Cross platform
    Expo simplifies the process of building cross-platform applications, giving developers tools to deploy apps for both iOS and Android effortlessly.
  • No native code
    With Expo, developers can build applications entirely in JavaScript, which is beneficial for those who may not be familiar with native coding languages.
  • Developer tools
    It provides a suite of tools such as an interactive development environment, error reporting, and debugging services that enhance the development experience.

Recommended for

    {"beginners" => "New developers who are just getting started with app development will find Expo's simplicity and comprehensive documentation helpful.", "rapid_prototyping" => "Teams seeking to quickly prototype and iterate on ideas can benefit from Expo's convenient tools and cross-platform capabilities.", "react_native_developers" => "Developers familiar with React Native who want a streamlined solution to deploy apps without deep diving into native code."}

FastAPI videos

FastAPI from the ground up

More videos:

  • Tutorial - 30 Days of Python - Day 14 - Web App with Flask, FastAPI, ngrok, and Invictify - Python TUTORIAL
  • Review - [PT] Python - API com FastAPI - Chat | twitch.tv/codeshow

Expo videos

Scenes from the 2019 National FFA Convention & Expo | Review Video

More videos:

  • Review - Auto Expo 2020 Film | Real-life review
  • Review - Expo Dry Erase Set Unboxing & Review

Category Popularity

0-100% (relative to FastAPI and Expo)
Developer Tools
85 85%
15% 15
API Tools
100 100%
0% 0
Mobile App Builder
0 0%
100% 100
Web Frameworks
100 100%
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare FastAPI and Expo

FastAPI Reviews

  1. Kurslog team
    ยท Working at Kurslog ยท

    When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding.

    The combination of Pydantic for data validation and built-in async support keeps our shared codebase clean, strictly typed, and reliable. But the biggest highlight for our cross-functional team is the automatic generation of interactive OpenAPI (Swagger) documentation. Our frontend and mobile developers no longer have to wait for backend engineers to manually update API docs; everything stays perfectly in sync automatically. It has drastically improved our team's communication and delivery speed.

    ๐Ÿ Competitors: Django, Flask, ExpressJS, Nest.js, Spring Boot
    ๐Ÿ‘ Pros:    Blazing fast performance (on par with nodejs and go)|Native asynchronous support out of the box|Automatic, interactive documentation generation (swagger/redoc)|Strict typing and data validation with pydantic
    ๐Ÿ‘Ž Cons:    Smaller plug-and-play ecosystem compared to older frameworks like django|Requires our architects to design the project structure and directory layout from scratch

The 20 Best Laravel Alternatives for Web Development
FastAPI, as the name hints, is a swift mover. Built on Starlette, itโ€™s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now thatโ€™s something.
25 Python Frameworks to Master
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack frameworks like Django.
Source: kinsta.com
3 Web Frameworks to Use With Python
myapp/ is the main directory of your FastAPI application. It includes all the other files and directories needed for the application.static/ is a directory used to store static assets such as CSS, JavaScript, and image files. These assets are served directly by the web server and are typically used to add visual styling and interactivity to the application.css/, img/, js/...
Best Alternatives to FastAPI App Free for Windows (2021)
FastAPI Alternative โ€“ So many alternatives app to FastAPI that you must to know out there. And, looking for an ideal software was not easy matter. Lucky you, at this page you can find the best replacement app for FastAPI. So what you are waiting for, get the latest FastAPI alternative app for Windows 10 from this page.
Top 5 Back-End Frameworks to Consider for Web Development in 2021
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. It is fast when compared to other major Python frameworks like Flask and Django. FastAPI gives great flexibility to fulfill businessesโ€™ API needs in todayโ€™s evolving world.

Expo Reviews

We have no reviews of Expo yet.
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Social recommendations and mentions

Based on our record, FastAPI should be more popular than Expo. It has been mentiond 311 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

FastAPI mentions (311)

  • Shipping Sovereign SDK: Cryptographic Forensic Receipts and the End of the AI "Prose Tax"
    The Sovereign SDK is a Python-native framework designed to minimize prose overhead while generating ironclad, cryptographic execution receipts for AI agents, complete with drop-in FastAPI/Starlette ASGI middleware. - Source: dev.to / about 1 month ago
  • 5-Minute AI Jobs and Closed Tabs โ€” Why We Built Replay-Then-Tail SSE
    We had a feature in production where a single user request could run for five-plus minutes โ€” fetch documents, chunk them, hit an LLM per chunk, synthesize a final answer. We did the obvious thing first: a FastAPI handler that ran the pipeline and streamed progress back to the browser over Server-Sent Events. - Source: dev.to / 2 months ago
  • FastAPI With LangChain and MongoDB
    FastAPI is a Python framework for building APIs quickly, efficiently, and with very little code. - Source: dev.to / 3 months ago
  • I Built A " CrowdSense AI " : A Scalable, Context-Aware Platform for Smart Stadiums
    Backend: Python-based FastAPI for its asynchronous I/O capabilities and rapid JSON serialization. - Source: dev.to / 3 months ago
  • Async PyMongo in FastAPI
    FastAPI is a high-performance web framework that is production-ready and designed for building APIs in python, with roots embedded in asynchronous programming. It embraces Pythonโ€™s asyncio model as its core principle rather than treating it as optional. This design choice gives FastAPI leverage for I/O bound workloads such as db access, external API calls and real-time data streaming. - Source: dev.to / 3 months ago
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Expo mentions (35)

  • Video player with React Native. Part 1: Expo
    We are going to review it in a series of two articles. This is the first one, where we will touch on Expo. Expo is quite popular and is even recommended in Getting Started guide for React Native. But it differs a lot. Here we will go through the process of building an app with Expo and then make technology comparison based on the results. - Source: dev.to / about 2 years ago
  • State Management Nx React Native/Expo Apps with TanStack Query and Redux
    This workspace is created using @nx/expo (Nx and Expo). - Source: dev.to / over 2 years ago
  • New OAuth Vulnerability (CVE-2023-28131) impacts hundreds of websites and Apps
    Just be clear this isn't an OAuth vulnerability. It's an vulnerability in expo.io. It doesn't even really have anything to do with OAuth. They've just terrible return url handling so it probably impacts a lot more than just stealing OAuth tokens. Source: about 3 years ago
  • Convert Reactjs + Firebase Project to a Mobile apk app. Please help
    I haven't messed with React Native in a hot minute, but it should be rather easy to port your React app to React Native. I recall using expo.io in uni for react native development. Hope that helps. Source: over 3 years ago
  • Form Validation in React (Native) using Formik
    Expo: Expo is a free and open source toolchain built around React Native to help you build native iOS and Android projects using JavaScript and React. Expo is a great way to get started with React Native. - Source: dev.to / over 3 years ago
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What are some alternatives?

When comparing FastAPI and Expo, you can also consider the following products

Flask - a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

React Native - A framework for building native apps with React

ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.

Django - The Web framework for perfectionists with deadlines

Android Studio - Android development environment based on IntelliJ IDEA