Thats nice to hear! Yup, i read that link yeasterday, i unpacked the APK with 7zip but i did not find any "lib" folder, from what i understand that means that the App is architecture independent correct?
That's correct yes. APKs are architecture independent unless they contain code for specific architecture, which will be placed in a lib folder. So no lib folder is a good sign!
Anything that runs directly on the processor has to be the specific architecture for that CPU. As you can see Construct runs via the Dalvik VM and the V8 VM. These are already on the device and using the correct architecture, so you don't have to worry about those. Java was specifically designed to be platform independent so programmers didn't have to worry about architecture differences.
Game/rendering engines that compile directly to machine code are often architecture dependant, such as unity and unreal.