Problem with build size

hey !
I got a problem with ionic v1 ! I need to upgrade an application with android sdk 23 to 26 all is fine i can build with success
“ionic cordova build android” then i get 10mo apk size
When i build with : “ionic cordova build android --release” i get 3mo apk size
I know a release build is less bigger than a debug build but 3 time less it is really big
What do you think about this ??!

same things happening with my app, but i think it’s fine no problem in app

Optimizations in the resources is the most probable source of the size delta.