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The Build a SAAS App with Flask Course (Udemy.com)

Build a real world web app with Python, Flask and Docker. Learn to accept payments with Stripe and so much more.

Created by: Nick Janetakis

Last updated July 2025

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What you will learn

  • See how a large application gets built up in stages
  • Build complex web applications and websites
  • Bid for Flask / web development freelance work
  • Confidence to apply for Flask positions at software companies
  • Proficiency with server-side development and databases
  • An awesome Docker based development environment

How it compares

Against the other 388 rated Udemy courses in Python on CourseDuck:

  • Rating4.4 out of 5higher than 37% of them
  • Reviews1,910#135 of 389 by number of reviews
  • Length10.6 hourslonger than 51% of them
  • Last updatedJuly 2025more recently than 67% of them

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Course Description

Do you want to create an awesome web application but aren’t sure where to start?

Hi, I’m Nick and for the last year I've been teaching thousands of happy students how to deploy web applications with Docker.

Now I want to teach you how to develop PRODUCTION READY web applications with confidence.

Most learning material out there only teaches you how to build toy examples and throw out lines like “you wouldn’t want to do this in production…”, but then they never tell you the REAL way to do it.

Imagine how awful you’d feel after spending your time and hard earned money but still had to do a ton of research to complete your project. I’ve been there, done that and it’s not fun.

Instead, a large portion of the code base in my course is battle hardened from running in production on multiple projects.

I’ll be at your side explaining my thought process along the way while we build up a multi thousand line application together.

You’re going to walk away with everything you need to feel confident building your own web applications.

"Wow, what an amazing resource you've made. The app source is amazingly concise (clearly years of experience distilled). Honestly, it's the handsomest web app code base I've ever seen. - David N."


Here’s just some of what you’ll learn by taking my course:
  • Learn how to use Docker to “Dockerize” a web application
  • Learn what Flask is and how to use its features in your applications
  • Learn how to create a Python 2 and 3 compatible code base
  • Learn how to use PostgreSQL, Redis and Celery with Flask
  • Create a full blown user management system
  • Create a flexible custom admin interface
  • Accept both recurring and microtransaction credit card payments
  • Deal with both HTML template and JSON responses
  • Logging, middleware and error handling
  • Database migrations and internationalization (i18n)


"I have been working with Flask for the past 3 years and have been a technical reviewer on the Mastering Flask Packt book, even so, I am learning so much form you! - Pedro B."


What makes Flask awesome?
  • Based on one of the most popular computer languages in the world (Python)
  • Minimalistic and easy to get started
  • Lightning fast (Pinterest’s API serves 12+ billion requests / day with Flask)
  • Vibrant community and ecosystem (hundreds of high quality extensions)
  • Profitable for freelancing and consulting
Why is Docker worth using?
  • Saves you from a ton of headaches when setting up development environments
  • Easily move an application across environments or servers
  • Prevents issues such as “well, it worked on my machine!”
  • Makes developing with teams a much more pleasant experience
  • You won’t need expensive hosting to deploy your web applications


You won’t just become a Flask master by taking my course but you’ll also gain the confidence in developing web applications so that you can command the hourly rates you deserve as a software developer.

This could be done through increasing your rates as a freelancer or negotiating a higher salary at your job. In my years working as a consultant and talking to a lot of developers, I discovered that most developers are not confident in their ability to fulfill work that is requested of them.

Some of them are even afraid to bid on or accept contract work.

This is actually a very common problem and is described as “Impostor Syndrome”. I’ve suffered from it for a long time and it has cost me tens of thousands of dollars and now I want to save you the hardship of making the same mistake.

You might be thinking “Nick, how in the world is a course on Flask going to let me raise my rates?” and that’s a great question but before I answer that, let’s just play around with a few numbers:

  • If you work 20 hours a week for the next year at $30/hour then you would stand to make $31,200.
  • After you double your rate then you would make $62,400 instead.


Wouldn’t you want an extra 30k in your pocket every year? You know, the only real difference between a $30/hour and $60/hour developer is their mindset.

One of them believes they can fulfill the job, while the other struggles to believe in themselves.

How will Build a SAAS App with Flask help you generate more income?

Simple, you’re going to get a battle hardened web application that you can use as a bulletproof base for your next project. You won’t have to sit there second guessing yourself while researching everything on your own.

You’re getting well tested code that’s been running in production. Tons of edge cases have been ironed out, and features were added due to real life needs. Not only that, but I’ll be at your side explaining everything to you while you make your way through the course.

You’re going to see how the application gets built up from a single file, all the way to a 4,000+ line project that spans across dozens of files and folders.

If that’s not enough, I’ll be available to answer any questions you have in the course’s forums and all of my courses come with an unbeatable 30 day guarantee that’s 100% RISK FREE. If you don’t love the course then I insist you get a 100% refund – no questions asked.

"Definitely delivers on hours and sanity saved! Comprehensive and well worth it. - B.C."

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Instructor Details

Nick Janetakis

Hi, I'm Nick and I've been a self taught software developer for about 20 years.

I'm also a Docker Captain, which means that Docker personally reached out to me to join their team as a trusted content provider and community leader.

Over the years I've worked as a consultant doing contract work for various clients while also hacking away on my own projects because it's what I love to do.

All of my courses have been created from experience I've gained while being in the trenches and figuring out things through real world experience.

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Reviews

4.4

1,910 ratings on Udemy

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By Andry RAJAONAH on 11/21/2020

OUI

By Vignesh on 11/7/2020

the course is good so far

By William Hexberg on 11/7/2020

This I got to section 10, and so far, there is no coding, just the instructor explaining what the files do. Watching lectures is not what I come to Udemy for. For me, code along is the best method for learning, that I have found.
At this point, there doesn't seem to be any reason to continue the course.

By Dipesh Jung Pandey on 10/25/2020

Awesome content and wonderful tutoring. Highly recommend it if you wanna get into intermediate and advanced app development.

By Geetansh Jindal on 10/19/2020

The Course is not updated to the latest version of flask. This course still uses Flask version 0.10.1 which was released way back in 2013

By TY Gu on 10/3/2020

This is actually hands down the best course that teaches the mid-level flask concepts / implementations which you need to create real world apps. Initially I didn't like the course as it felt skipping too many steps. After going through some basic tutorials, I started to really appreciate it.

By Hari Perev on 8/10/2020

exceeded expectations!

By Jonathan Liew Jia Jun on 8/8/2020

Short and good ! I've known the basic but i can't find any advanced course, this is it !!! thanks !!!

By Jamie Purchase on 7/25/2020

At this point, I am very tempted to pause for a while, so I can practice what's been discussed thus far in a separate, personal project. This is because I learn much better when I actually put things into action (ie: build the files and type the code), rather than just looking at them.
The quality of the videos has been very good so far.

By Dhaval Narwani on 7/20/2020

It's an amazing course. Though I believe that this shouldn't be a course for new developers.

By Nadia Golyaeva on 6/27/2020

So far it's close to perfect

By Sahil Ramkaran Lawton on 6/13/2020

I bought this course because I find I difficult to read, and would rather watch video tutorial. Also finding that flow state where you just do what the video says to do is very helpful. This course is annoying as it keeps breaking my flow by making me change between written notes and videos. To install docker, and other things, you should have videos that show how its done, and if people don't need to watch them, they can skip those videos

Showing 12 of 286 reviews

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Overall Score : 88 / 100