# [Android Components](../../README.md) > Samples > Glean

![](src/main/res/mipmap-xhdpi/ic_launcher.png)

A simple app showcasing Glean, the mobile telemetry SDK & the Experiments library.

## Concepts

The main concepts shown in the sample app are:

* Usage of the `metrics.yaml` file.
* Integration between Glean and the application's build process to generate the specific metrics API.
* Usage of the generated specific metrics API.
* Integration of the Nimbus experimentation library.

## License

    This Source Code Form is subject to the terms of the Mozilla Public
    License, v. 2.0. If a copy of the MPL was not distributed with this
    file, You can obtain one at http://mozilla.org/MPL/2.0/
