Here’s how I see this project (and how I approach most of my own projects) - no one is saying that it can’t be an app eventually - but I think before it can be an app, there needs to be some proper justification for making it an app.
As mentioned in the video, apps are expensive to build and maintain, and at this early stage, you don’t know if there is any real demand for what you’re building. You’re entering into a market which is gaining lots of popularity right now, and while you’re idea is unique (I think), you need to properly justify that it’ll work (after all, there might be a reason why no one else is doing what you’re doing).
It’s because of this that I suggest you start with a responsive website. I understand that not everyone has access to a data connection all of the time, but it’s becoming more and more prevalent. Use a cheap and easy to build prototype (such as what you already have) to prove the concept. Once you’ve truly proven the concept, and maybe have maybe gained some money to do further development - then you can think about making it into app.
I’m doing the same with at least 3 of my other projects - they’re all being built as responsive websites first, and once I know there is real demand for an app, I’ll build an app (so far that hasn’t happened - but I’m glad that I’ve not spent lots of money finding that out).
If there is one tip I’d give anyone about names and domains names - never discuss what domain names you want in public before you’ve secured the domain for yourself.
Many years ago, when I was first getting into web development, I built a site called The Eerie Network (it was Fortean in nature; reporting on unusual things). I really wanted to get
eerie.net for it, so I remember contacting my host and asking him to buy it for me (this was before I knew I could do such things myself) then went telling everyone on the alt.folklore.ghost-stories usenet group that I would soon own
It turns out that someone had seen this message, knew that I wanted it, so went and registered it for themselves before my host had a chance. I have no idea who this person was, but it didn’t take long for a page to appear saying ‘this domain for sale, $10,000’ (or some other totally stupid price).
I had to get eerie.org instead (and thought a rename to The Eerie Organisation - but didn’t).
TL;DR, Never talk about domains until you own said domains.