After writing enough front end work, I'm not exactly afraid of writing native apps for multiple platforms. I dont want to, which is why I chose react native JS

After writing enough front end work, I'm not exactly afraid of writing native apps for multiple platforms. I dont want to, which is why I chose react native JS for this round of development. But the big deal IMO is getting the back end of the app developed and working. Beautifying is annoying and time consuming, but I dont need to learn anything new. Implementing a backend that is secure required learning a framework and massive testing. IMO pretty is easy, but I havent made anything for IOS, so who knows.