Please share knowledge with me

Hi All,

I am currently building an app for iPhone and Google Play store. Like many others, I am using Claude Code to assist with coding, and my general knowledge from school to fill in the gaps on the backend. I am heavily underprepared for the marketing angle, and was hoping anyone could share with me some of their tools, best practices, etc.

(For reference, I am building a fitness / workout logging app if that helps with any tailored recommendations)

Thank you!