Ruler
Gradle plugin which helps you analyze the size of your Android apps
...Measuring app size is straightforward, but knowing what contributes to it is not. Especially in bigger projects with hundreds or thousands of modules and third-party dependencies. Ruler provides a convenient way to find out how much each module and dependency contributes to the total size of your app by running a single Gradle task. First you need to add the Ruler Gradle plugin to the buildscript classpath in your top-level build.gradle file. When using app bundles, Google Play will generate optimized APKs for each device. ...