Software Alternatives & Startups

Koinly VS FastAPI

Compare Koinly VS FastAPI and see what are their differences

Koinly

Koinly is the easiest way to monitor your crypto activity & file your taxes.

Rating
0 reviews
Pricing
Freemium
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
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

FastAPI might be a bit more popular than Koinly. We know about 312 links to it since March 2021 and only 306 links to Koinly.

social mentions
306 vs 312
Cryptocurrencies popularity
100% vs 0%
alternatives listed
204 vs 240+

Base details

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

Koinly
FastAPI
Website koinly.io fastapi.tiangolo.com
Pricing
Open source Free
Company Startup from the United Kingdom · 2018 Startup from Colombia
Listed in

About Koinly and FastAPI

In their own words, as submitted to SaaSHub.

Koinly
FastAPI

Koinly is a cryptocurrency calculator trusted by crypto investors in over 20 countries. Koinly integrates with 700+ exchanges, blockchains, and wallets to give investors an easy and accurate way to track their crypto transactions in one place. From here, Koinly calculates the total capital gains...

Read more about Koinly

No description of FastAPI yet.

Features and specs

What each product offers, as listed by its team.

Koinly 6 features
FastAPI 7 features
  • User-Friendly Interface
    Koinly offers an intuitive and easy-to-navigate interface, making it accessible for both novice and experienced crypto investors.
  • Comprehensive Transaction Tracking
    The platform supports a wide range of cryptocurrencies and integrates with numerous exchanges and wallets, allowing for detailed transaction tracking.
  • Tax Reporting
    Koinly provides automated tax reports that comply with the regulations in various countries, simplifying the process of filing crypto taxes.
  • Accurate Calculations
    Koinly uses advanced algorithms to accurately calculate gains, losses, and income from your crypto activities.
  • Excellent Customer Support
    Users generally report positive experiences with Koinly's customer support, which is responsive and helpful.
  • Portfolio Insights
    The platform offers valuable insights into your crypto portfolio, including detailed analytics and performance tracking.

Possible disadvantages

  • Cost
    While Koinly offers a free plan, advanced features and comprehensive reporting require a paid subscription, which might be expensive for some users.
  • Limited Free Plan
    The free plan has limitations on the number of transactions it can handle, which may not be sufficient for active traders.
  • Complex Transactions
    Some users have reported that the platform struggles with the accurate categorization and calculation of more complex transactions, such as DeFi activities.
  • Privacy Concerns
    Some users may be concerned about providing access to their exchange and wallet data, which involves sharing sensitive financial information with a third-party service.
  • Data Sync Issues
    Occasionally, there are reports of synchronization issues where data from exchanges or wallets doesn't update correctly or promptly.
  • Learning Curve for Detailed Features
    While basic features are user-friendly, some of the more advanced tools and customization options might have a steeper learning curve.
  • 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.

Analysis

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

Koinly
FastAPI

Overall verdict

  • Overall, Koinly is considered a reliable and efficient tool for managing cryptocurrency taxes. It is well-suited for individuals who seek an automated solution to handle their crypto tax responsibilities and wish to ensure compliance without hassle.

Why this product is good

  • Koinly is often regarded as a good cryptocurrency tax software due to its user-friendly interface, comprehensive support for a wide range of exchanges and wallets, and its ability to generate tax reports compliant with various countries' regulations. It automates the tedious process of tracking transactions, calculating gains and losses, and preparing necessary tax documents. Additionally, it supports multiple currencies and offers detailed features that cater to both casual investors and professional traders.

Recommended for

  • Cryptocurrency investors seeking an easy-to-use tax solution
  • Frequent traders needing comprehensive transaction tracking
  • Individuals looking for a software compatible with various international tax jurisdictions
  • Users who want to automate their tax reporting process

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

Videos

Walkthroughs and reviews on video.

Koinly 3 videos + Add
FastAPI 3 videos + Add

Ripple’s Shareholder SBI Invest in QIWI. Ripple Unleashes 1B XRP. Koinly to Add Support for XRP!

More videos

  • - Koinly Review - Paying Taxes on Crypto The Easy Way
  • - Koinly Review: The BEST for Crypto Taxes?

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

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
Koinly
FastAPI
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

User comments

Share your experience with using Koinly and FastAPI. 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.

Koinly no reviews yet
FastAPI 5.0 · 1 review
  • 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.

Koinly 306 mentions
FastAPI 312 mentions
  • Tax Question. If i buy $1000 worth of crypto and sell 50% on a double and then let the balance ride. Am i exempt from paying tax on that transaction?
    Every transaction you make with crypto is a taxable event. Even buying something with your bitcoin is a taxable event. So instead of looking at your balance, you have to look at each and every transaction and see how much you paid for... Source: almost 3 years ago
  • 48-nation bloc to crack down on using crypto assets to avoid tax
    Https://koinly.io/ is a popular recommendation here in Denmark. Denmark may have the worst possible taxation for crypto: every time you sell, use or convert your crypto, that's an event where you have to calculate your gains or losses.... - Source: Hacker News / almost 3 years ago
  • Questions about defi
    -is it possible to track swaps and trades I'm making in defi via koinly.io or another tax tracking provider? I want to take advantage of long term capital gains vs short term whenever possible. Source: about 3 years ago

View more

  • 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 Koinly and FastAPI

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