Software Alternatives & Startups

FastAPI VS NativeScript

Compare FastAPI VS NativeScript and see what are their differences

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.

Rating
5.0 · 1 review
Pricing
Open source Free
NativeScript

Build truly native apps with JavaScript

Rating
0 reviews
Pricing
Open source

Which is more popular?

Based on our record, FastAPI seems to be a lot more popular than NativeScript. While we know about 312 links to FastAPI, we've tracked only 21 mentions of NativeScript.

social mentions
312 vs 21
Developer Tools popularity
87% vs 13%
alternatives listed
240+ vs 212

Base details

Website, pricing, platforms and company facts side by side.

FastAPI
NativeScript
Website fastapi.tiangolo.com nativescript.org
Pricing
Open source Free
Open source
Company Startup from Colombia
Listed in

Features and specs

What each product offers, as listed by its team.

FastAPI 7 features
NativeScript 6 features
  • 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

  • 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.
  • Cross-Platform Development
    NativeScript allows developers to write code once and deploy it across multiple platforms, including iOS and Android, which saves time and resources.
  • Native Performance
    Since NativeScript directly uses native components, it delivers high performance comparable to native applications, unlike some other cross-platform solutions.
  • Rich Ecosystem
    NativeScript offers a rich ecosystem of plugins and modules, making it easy to extend functionalities and integrate with various services.
  • Single Codebase
    Maintaining a single codebase for both iOS and Android reduces development and debugging efforts.
  • Open Source
    Being open source, NativeScript has strong community support and continuous improvements driven by developers around the world.
  • Access to Native APIs
    NativeScript allows direct access to native APIs, giving developers more flexibility and control over platform-specific features.

Possible disadvantages

  • Steep Learning Curve
    The framework requires an understanding of native development concepts, which can be complex for new developers or those not familiar with mobile development.
  • Lack of Third-Party Components
    Compared to more mature frameworks, NativeScript has a limited number of third-party libraries and UI components available.
  • Performance Overhead
    Despite high performance, there is still some overhead compared to fully native applications due to the abstraction layer.
  • Limited Community Support
    Although the community is growing, it is still smaller compared to mainstream frameworks like React Native or Flutter, which might result in slower issue resolution and fewer resources.
  • Maintenance and Updates
    Keeping the framework and its plugins up to date with the latest iOS and Android releases can be challenging and resource-intensive.

Analysis

An editorial look at what each product does well and who it suits.

FastAPI
NativeScript

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

Overall verdict

  • NativeScript is considered a good choice for developers seeking to create cross-platform mobile applications with a native look and feel while using web technologies they are already familiar with. It balances the flexibility of web development with the performance and capability of native apps.

Why this product is good

  • NativeScript is a popular open-source framework for building native mobile applications using JavaScript, TypeScript, Angular, Vue.js, or Svelte. It allows developers to write and maintain a single codebase for both iOS and Android, which can significantly reduce development time and effort. NativeScript provides access to native APIs, ensuring that apps can leverage device capabilities to deliver a truly native user experience. Additionally, the community and plugin ecosystem offer resources and tools to enhance app functionality and streamline development processes.

Recommended for

  • Web developers looking to leverage their existing skills to build mobile apps.
  • Teams that need to maintain a single codebase for multiple platforms.
  • Projects that require deep integration with native device features.
  • Developers familiar with frameworks like Angular, Vue.js, or Svelte who want to build mobile applications.

Videos

Walkthroughs and reviews on video.

FastAPI 3 videos + Add
NativeScript 3 videos + Add

FastAPI from the ground up

More videos

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

NativeScript VS React Native 2019 | performance | community | plugins

More videos

  • - Which one is best for you? Flutter, React Native, Ionic or NativeScript?
  • - 7 Things to Know When Learning NativeScript

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
FastAPI
NativeScript
87% 87%
13% 13%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

User comments

Share your experience with using FastAPI and NativeScript. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

FastAPI 5.0 · 1 review
NativeScript no reviews yet
  • Rated 5/5 by Kurslog team
    SaaSHub review
    · Apr 2026

    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...

  • The 20 Best Laravel Alternatives for Web Development
    tms-outsource.com · Jan 2024

    FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.

  • 25 Python Frameworks to Master
    kinsta.com · Oct 2023

    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...

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

FastAPI 312 mentions
NativeScript 21 mentions
  • I Built My First Machine Learning API — Here's Everything I Learned
    I used FastAPI, a Python framework built specifically for creating APIs quickly, with automatic validation and interactive documentation baked in. - Source: dev.to / about 1 month ago
  • 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 / 4 months ago
  • 5-Minute AI Jobs and Closed Tabs — Why We Built Replay-Then-Tail SSE
    We had a feature in production where a single user request could run for five-plus minutes — 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... - Source: dev.to / 5 months ago

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Alternatives to FastAPI and NativeScript

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