You need to optimize the app across both platform. You'll also have to work on your server side security and don't pick up codes written by hackers.

Top 10 Cross Platform Mobile App Development Tools | Fingent Blog[^]

I'm guessing you've got the writing part down. Instead of forming ideas and doing research. You should do market research, study your target audience. Then generate ideas and do research on them. And always do fact checking.

It most definitely is. With Artificial Intelligence (AI) and Machine learning you can get the highly sophisticated bot based conversations that replicate human conversation.