Dividing a project into apps

Django applications are called projects. A project is made up of several applications or apps. An app is a Python package that provides a set of features for a common purpose such as authentication or thumbnails.

Ideally, each app must be reusable and loosely coupled to others. You can create as many apps as you need. Never be afraid to add more apps or refactor the existing ones into multiple apps. A typical Django project contains 15-20 apps.

An important decision to make at this stage is whether to use a third-party Django app or build one from scratch. Third-party apps are ready-to-use apps, which are not built by you. Most packages are quick to install and set up. You can start using them in a few minutes.

On the other hand, writing your own app often means designing and implementing the models, views, test cases, and so on yourself. Django will make no distinction between apps of either kind.