I understand how to code… To an extent. I know syntax and can solve problems given a set of tools (such as source code, functions, etc). I’ve made mods and basic programs (literally and figuratively), but I’ve never messed with internet stuff other than networking and mostly on the hardware side.
I don’t expect to make anything that will catch on, but maybe I can make a perfectly adapted thing for my own personal use. Would it be a good learning experience, or would jumping from modding and making, like, a DnD character sheet generator into making a front end for a website/service be a bit of an undertaking?
Writing an app as a proof of concept just for fun may be doable, depending on what you already know, how good you are at learning, and how much time you want to invest.
Writing an app that’s better than the several existing apps? Definitely not.
Edit: looking at the text - go for it (if you want it primarily as a learning experience). The network stuff certainly will have some new concepts (especially around logging in) but it’s not super complicated. You’ll basically end up having a function “getComments” that sends a HTTP request (calling a library) and converts the JSON response into your internal data structures.