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