How does an installed app use storage?
<p>I'm building an app that will contain a fair amount of resources (video) and need to better understand the impact a large APK will have on users. As an experiment I located a 32MB APK (which contains lots of video) and installed it on a Nexus One. Before installation the phone showed 36MB free internal storage. After installation is showed 33MB (not the ~4MB I was expecting).</p>

<p>How has a 32MB app been installed in such a way that only 3MB of internal storage has been used? </p>

<p>If anyone can clarify or point me to a resource that explains how internal memory is used by installed app, that'd be great.</p>
