I made some simple Android test project in Unity 3D (2017.3.0f3) in order to make APK size comparisons. The results are in a table below.
Basically, just enabling Vuforia and adding AR camera to an empty scene adds more than 20mb to APK size, twice more than unity engine itself.
Is there some way to optimize this and reduce APK size?
|Scene elements||Player settings||APK size (mb)|
|Empty scene||ARM only||11.6|
|Empty scene||ARM only, StrippingLevel = Strip Assemblies||10|
|Empty scene, Vuforia enabled, AR Camera added||ARM only, StrippingLevel = Strip Assemblies||31.6|