Which Backend Framework Should I Learn for iOS Development with Firebase: Flask, Django, or FastAPI?

If you're looking for the quickest way to get started, I’d suggest checking out Flask or FastAPI. Flask is super beginner-friendly, especially for someone with less programming experience. However, if you want to build a more comprehensive app in the long run, Django has you covered with a built-in user model and a lot of features that can save you time down the line. I prefer Flask for small projects but go with Django for anything larger.

I'd say FastAPI is a great choice for its ease of writing and solid performance, especially if you need API functionalities. Flask is also very easy to grasp. I’ve taught Flask to students in just a few weeks of programming. Just keep in mind that if Firebase integration is key, you might need to learn a little about that specific setup.

I’ve worked with all three, and if I had to build a full-stack app quickly, I'd definitely go with Django. It's got everything you need out of the box, including user management and admin capabilities. For pure APIs, FastAPI is awesome, but learning the ORM for databases like SQLAlchemy with Flask or Django's ORM can be a factor, too.

For a straightforward web API, FastAPI is excellent. Its documentation is very helpful, and it can easily integrate with Firebase using libraries like firebase-admin. But if you're considering building user management features too, Django has more built-in tools right from the start.

In my experience, whether you pick Flask or FastAPI will depend on your project needs. FastAPI is often touted for speed and efficiency, but Django is hard to beat for fully-featured applications with tight deadlines. Each framework has its own learning curve and features, so assess what you really need for your app!