Android provides all the ingredients for five-star adaptive apps. The recipes in
this cookbook select and combine choice ingredients to solve specific
development problems. Each recipe includes best practices, quality code samples,
and step-by-step instructions to help you become an adaptive app top chef.

## Star ratings

The recipes are star rated based on how well they align with the [Adaptive app
quality guidelines](https://developer.android.com/docs/quality-guidelines/adaptive-app-quality).

|---|---|
| ![Five star rating icon](https://developer.android.com/static/develop/adaptive-apps/cookbook/images/shared/five-star-rating.png) | Meets the criteria for Tier 1, Adaptive differentiated |
| ![Four star rating icon](https://developer.android.com/static/develop/adaptive-apps/cookbook/images/shared/four-star-rating.png) | Meets the criteria for Tier 2, Adaptive optimized |
| ![Three star rating icon](https://developer.android.com/static/develop/adaptive-apps/cookbook/images/shared/three-star-rating.png) | Meets the criteria for Tier 3, Adaptive ready |
| ![Two star rating icon](https://developer.android.com/static/develop/adaptive-apps/cookbook/images/shared/two-star-rating.png) | Provides some adaptive capabilities, but falls short of the adaptive app quality guidelines |
| ![One star rating icon](https://developer.android.com/static/develop/adaptive-apps/cookbook/images/shared/one-star-rating.png) | Meets the needs of a specific use case, but doesn't properly support adaptive app behavior |