Thanks for your reply. I completely agree.
I was approaching this from a design perspective but I definitely know what you mean about porting.

Normally, you’d want to design a cross-platform app and ideally, the code should abstract platform-specific features so that porting would be straight-forward.

As far as quoting this piece, go for it

Best Regards,
–Dan.

I think the compatibility of mobile application is also very important to the customer. Most of mobile application’s business model is based on subscription. People usually started with a prototype on one platform, then port on other platform. This may give a huge headache because of platform difference.

Anyway, i would like to quote your words in my presentation if you do not mind.

J.