You already have a wordpress site, so possibly could consider https://apppresser.com/, which integrates WP into a standalone mobile app.
As a cheaper solution - just update your existing site and optimize it better for mobile
Take a look at AppPresser. It's not a mobile wrapper solution. You create your content in your WordPress site, and the apps load the content/pages rather than wrapping the mobile viewport in an iOS/Android wrapper.
According to this 69% of bloggers make $0, and 22.6% make <$10,000 per year.
However there are a lot of bloggers. Just some back of the napkin thoughts, it might make more financial sense to have a one-size-fits-all app for a popular platform like WordPress that has millions of users, and charge them a small amount.
Something like what AppPresser does.
WordPress does this pretty well. You will just need to install and configure woo commerce, together with addons including one for SMS, and reporting, and also install a mobile app extension (I would suggest AppPresser with the WooCommerce extension,https://apppresser.com/features/woocommerce-apps/)
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I'm surprised nobody said this already, but AppPresser is simply amazing. Wrote native apps with WP backends until I found this. They do all the integrations for all the most popular plugins and theming it is possible. Check it out. https://apppresser.com
As soon as I learn how! It is PWA (Progressive Web App) enabled so you can bookmark any page and it will show it as an App within your mobile (not just a lame shortcut) and I'll be building out member functionality so that when you are logged in you can hide all of the clutter to only show your preferences; e.g. if you're here in Brisbane you don't need to see Sydney or Canberra, etc.
I'm going to first give AppPresser (https://apppresser.com/) a go as this is a WordPress site then go native and build a universal iOS/Android App. I have zero experience in the land of mobile app dev so it'll be a steep learning curve but that's okay! :)
To still have the cart maybe just disable/change the checkout button to another action? You could probably tweak it by doing a Filter on the checkout button and hiding the payment info. This link goes into that a bit:
https://apppresser.com/woocommerce-checkout-customization-guide/
Don't know off the top of my head, but I'd suggest doing a regex in file search for the text near where you want it to end up (e.g. "Add to Cart"). Whatever file name it is should closely resemble the hook calling it, or a parent that calls it. As a last step you could just add your button to the template after you've found it.
EDIT-Actually this page has some pretty good info as well, though it doesn't specify a hook. Try them all?
https://apppresser.com/woocommerce-checkout-customization-guide/
Here is an example from a request i did on a specific post, just to give you some idea. There is some stuff left out at the bottom but you probably won't need it anyway.
Also this tutorial and the WP REST API handbook can come in handy!
Thank you for the response.
I looked at apppresser previously. At first glance, it seems to be "ok" from the information on their website, but I want some of the features in the Agency package, but don't need the rest. I don't have a Woo or buddy press site, but want the facebook login and social share. I was leaning towards ideapress, but I emailed them and they never responded. So, was looking for alternatives.