The "Approx. download: $ kb" display on the lower status bar of the C2 UI does not seem to include the size of the c2runtime. This is potentially problematic, because publishers tend to having hard size limits for download packages for mobile and people might realize their mistake too late in the process.
To include c2runtime in the size calculation, or (preferred): have two seperate numbers, one "total download size" and one "assets only"
Construct 2 version: