zipalign is an archive alignment tool that provides important
optimization to Android application (.apk) files.
zipalign must only be performed
after the .apk file has been signed with your private key.
If you perform zipalign before signing, then the signing procedure will undo
the alignment
The monkeyrunner tool is not related to the UI/Application Exerciser Monkey (also known as the monkey).
The monkeyrunner tool provides an API for writing programs that control an Android device
or emulator from outside of Android code. Such as to write a Python program
that installs an Android application or test package, runs it, sends keystrokes to it,
takes screenshots of its user interface, and stores screenshots on the workstation.