Software Alternatives & Startups

Simple VS FastAPI

Compare Simple VS FastAPI and see what are their differences

Simple

Simple is reinventing personal banking with modern online and mobile experiences, no surprise fees...

Rating
0 reviews
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?

Based on our record, FastAPI seems to be a lot more popular than Simple. While we know about 313 links to FastAPI, we've tracked only 4 mentions of Simple.

social mentions
4 vs 313
Finance popularity
100% vs 0%

Base details

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

Simple
FastAPI
Website simple.com fastapi.tiangolo.com
Pricing —
Open source Free
Company — Startup from Colombia
Listed in

Features and specs

What each product offers, as listed by its team.

Simple 5 features
FastAPI 7 features
  • User-Friendly Interface
    Simple offers an intuitive and straightforward interface, making it accessible for users who may not be tech-savvy.
  • No Hidden Fees
    Simple is transparent about fees, such as not charging for overdrafts or maintaining a minimum balance, which can save users money.
  • Innovative Budgeting Tools
    Tools like 'Safe-to-Spend' and 'Goals' help users manage their finances more effectively by visually representing their spending power and saving goals.
  • Excellent Customer Service
    Simple has a reputation for responsive and helpful customer service, which can be reached via multiple channels, including phone, email, and social media.
  • FDIC Insured
    Deposits are insured up to $250,000 through a partnership with BBVA USA, adding a layer of security for users.

Possible disadvantages

  • Limited Product Offerings
    Simple lacks a comprehensive suite of financial products like loans and credit cards that traditional banks offer.
  • Cash Deposit Limitations
    Depositing cash can be cumbersome as Simple does not have physical branches; users must utilize third-party services which might incur fees.
  • No Physical Branches
    The absence of physical locations may be a disadvantage for those who prefer face-to-face interactions for their banking needs.
  • Reliance on Internet Access
    As a fully online bank, Simple requires stable internet access and competent digital literacy, which may not be convenient for all users.
  • Limited ATM Network
    While Simple provides access to a broad network of fee-free ATMs, users might still encounter situations where finding a fee-free ATM is inconvenient.
  • 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.

Simple
FastAPI

Overall verdict

  • While Simple was considered a good choice for digital banking due to its ease of use and helpful financial management tools, it no longer operates independently. Former Simple customers and individuals seeking similar features might consider alternatives like Chime, Varo, or other modern fintech companies that offer similar services.

Why this product is good

  • Simple was known for its intuitive and user-friendly mobile banking experience, offering features like budgeting tools, no fees on basic accounts, and a reliable digital platform. It aimed to make banking straightforward and stress-free for users, especially those comfortable with handling finances through an app. However, as of 2021, Simple has been shut down by its parent company, BBVA USA, and its services have been transitioned into BBVA's offerings.

Recommended for

    Simple, when operational, was recommended for tech-savvy individuals looking for a seamless online banking experience without many fees, and people interested in integrated budgeting and financial tracking tools. Current recommendations would be to explore existing fintech solutions with comparable benefits.

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.

Simple 3 videos + Add
FastAPI 3 videos + Add

The Truth About Simple Skin Care

More videos

  • - DOCTOR V Reviews Simple | Brown/ Dark Skin of Colour | SOC
  • - Simple Skincare Review! Micellar Water, Cleansers, Moisturizer | Clean, Affordable Skin Care

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
Simple
FastAPI
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

User comments

Share your experience with using Simple 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.

Simple 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.

Simple 4 mentions
FastAPI 313 mentions
  • Closed bank closed debit card (simple.com)
    I received a refund for an item on Amazon and the debit card and bank was closed. Amazon will not reissue the refund to a different debit card and I'm clueless who to contact if there is anyone to contact since simple.com was defunct in... Source: over 3 years ago
  • Am I selfish?
    Get a fresh bank account without him; credit unions can be good for this. Make sure it's not at a bank that he frequents...you don't want the teller to be "helpful" and clue him in on things. I used to recommend simple.com for a debit... Source: over 4 years ago
  • I never had to call Simple.
    Patience and discovering that simple.com now points to BBVA's Simple migration page. Source: over 5 years ago

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  • ContexteTech is now open source: a hub for everything that adapts an AI model
    API: FastAPI with async SQLAlchemy, PostgreSQL 17 for data, Redis for caching and rate limits. The cache is invalidated by a single version counter bumped on every write: no fine-grained purging to manage. - Source: dev.to / 1 day ago
  • 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 2 months 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

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Alternatives to Simple and FastAPI

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