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Flask vs Django

Flask logo

Flask

Software

A lightweight WSGI web application framework

From
Free
Rated
-
Full reviewWebsite
Django logo

Django

Software

The web framework for perfectionists with deadlines

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Flask requires manual configuration of many common features like authentication, ORM, and admin panels; Django does not fully support asynchronous database access
  • They diverge on capability: Flask covers Lightweight framework, Django covers Model-View-Template (MVT).

Where they differ

Only the attributes on which Flask and Django actually diverge.

Attributes where Flask and Django differ
AttributeFlaskDjango
PlatformsLinux, macOS, Windows, Cloud (any platform supporting Python)Linux, macOS, Windows
Founded20102005

Identical on both: starting price (Free), pricing model (free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Flask

  • Lightweight framework
  • Jinja2 templating
  • Werkzeug WSGI toolkit
  • Request handling
  • Session management
  • Cookie handling
  • Blueprint organization
  • SQLAlchemy

Only in Django

  • Model-View-Template (MVT)
  • Object-relational mapping
  • Automatic admin interface
  • Template engine
  • Form handling
  • Authentication system
  • Internationalization
  • MySQL

Both cover

  • URL routing
  • Celery
  • Redis
  • PostgreSQL
  • CSRF protection

What people use each for

The jobs each tool is most often brought in to do.

Flask

  • REST APIs and backend servicesnot Django
  • Small-to-medium web applications and prototypesnot Django
  • Microservicesnot Django
  • Server-rendered apps using Jinja templatingnot Django
  • Teaching and learning web developmentnot Django

Django

  • Web application developmentnot Flask
  • Content management systemsnot Flask
  • E-commerce platformsnot Flask
  • API developmentnot Flask
  • News websitesnot Flask
  • Social networksnot Flask

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Flask

  • Requires manual configuration of many common features like authentication, ORM, and admin panels
  • No built-in admin interface or scaffolding tools
  • Minimal built-in security features compared to full frameworks

Django

  • Does not fully support asynchronous database access
  • Monolithic design can feel restrictive for small-scale or lightweight applications
  • Batteries-included approach adds overhead if features are not needed
  • Slower framework evolution due to backward compatibility requirements

Pricing, plan by plan

Flask

Free
  • Open SourceFree
    • Micro web framework
    • Flexible architecture
    • Jinja2 templating

Django

Free
  • Open SourceFree
    • Full web framework
    • Admin interface
    • ORM system

Which should you pick?

Choose Flask if

  • You need lightweight framework.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Cloud (any platform supporting Python).
  • You also want jinja2 templating.
Flask review

Choose Django if

  • You need model-view-template (mvt).
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want object-relational mapping.
Django review

Questions people ask

Is Flask or Django better?
Neither clearly leads. Flask starts at Free and Django at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flask or Django?
Flask starts at Free and Django at Free.
Does Flask or Django run on more platforms?
Flask runs on Linux, macOS, Windows, Cloud (any platform supporting Python). Django runs on Linux, macOS, Windows.
Can I use Flask for free?
Both have a free tier, so you can try either at no cost before committing.
What is Flask best used for?
Flask is most often used for rest apis and backend services, small-to-medium web applications and prototypes, microservices, server-rendered apps using jinja templating. Of those, rest apis and backend services and small-to-medium web applications and prototypes are not what Django is typically brought in for.
What can Flask do that Django cannot?
Flask covers Lightweight framework, Jinja2 templating, Werkzeug WSGI toolkit, Request handling. Django covers Model-View-Template (MVT), Object-relational mapping, Automatic admin interface, Template engine. Both handle URL routing, Celery, Redis, PostgreSQL.

Answered from the vendors’ own pages

Flask: Is Flask free to use?

Yes. Flask is open-source software released under the BSD-3-Clause License, available free for any use including commercial applications.

Source
Django: What databases does Django support?

Django natively supports PostgreSQL, MySQL, SQLite3, and Oracle databases through its ORM, allowing developers to switch databases without rewriting code.

Source
Flask: What are Flask's core dependencies?

Flask depends on three main libraries: Werkzeug (WSGI toolkit), Jinja (template engine), and Click (CLI toolkit).

Source
Django: How does Django handle database schema changes?

Django includes a built-in migration system. Developers use makemigrations to create migration files and migrate to apply changes to the database schema.

Source
Flask: Does Flask provide built-in database support?

No. Flask is a microframework that does not include built-in database support. Developers must choose and integrate their own database libraries, though Flask-SQLAlchemy is a popular community extension.

Source
Django: Does Django support asynchronous programming?

Django added basic async/await support, but full asynchronous database access remains limited. The framework does not fully support asynchronous programming, which can be a limitation for real-time applications.

Source
Flask: What platforms does Flask support?

Flask is a microframework for Python that runs on any platform that supports Python, including Linux, macOS, Windows, and cloud platforms.

Source
Django: Is Django free and open source?

Yes, Django is free and open-source software maintained by the Django Software Foundation, founded in June 2008.

Source
Flask: Can Flask scale to large applications?

Yes. While designed to be lightweight and simple, Flask is designed with the ability to scale up to complex applications through blueprints, extensions, and modular architecture.

Source
Flask: Does Flask require a build step to run?

No. Flask does not require a build step. Applications can run directly with the Flask development server using 'flask run' from the command line.

Source
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