---
title: "Types - app vs lib"
description: "The application platform works to compile, test, and bundle both applications and front-end libraries in a consistent way. This ensures that all DHIS2 application components are cross-compatible and b"
url: https://developers.dhis2.org/docs/app-platform/config/types
source: https://github.com/dhis2/app-platform/tree/master/docs/config/types.md
---

# Types - `app` vs `lib`

The application platform works to compile, test, and bundle both **applications** and **front-end libraries** in a consistent way. This ensures that all DHIS2 application components are cross-compatible and build processes can be configured from a central location.

The default app type (**app**) is intended to be connected and used within a DHIS2 instance. App platform also supports a type **login_app** which does not require a user to be authenticated (intended for a login app).

Building a Library is nearly identical to building an Application - just set the `type: 'lib'` property in `d2.config.js`. You can then optionally specify an entrypoint source file in `entryPoints.lib` - the default is `src/index.js`.