If you don't mind following my approach, I'm writing a book ( https://opinionatedlaunch.com ) for building and launching mobile apps end-to-end. It's for solopreneurs who can code and a small team of up to a dozen devs.

It covers not only the mobile app, but everything else. So, opinionated. There are many ways to make a mobile app and its supporting ecosystem, and it defeats the purpose if I simply explain everything there is and let the reader decide how they want to proceed. Not to mention I will never finish writing that kind of book :)