The project is built with Gradle.
Assemble app.
bash$ cd gotapdance/android/app
bash$ ../gradlew assemble
Install app on device or emulator.
bash$ cd gotapdance/android/app
bash$ ../gradlew install
Developer mode have to be enabled on device.
Tapdance also can be built from Android Studio or Intellij Idea via standard interface.
One of the latest versions looks like this: