You are correct. It has been suggested before, however, we did have an app for MPGH in the past.
The old app I believe has not been updated for awhile and it was not officially in the app store.
Not sure what phone you have, or what browser you use on your phone, but I use chrome on my s7 edge.
Works perfectly fine when I click "request desktop site" and it doesn't lag at all.
In terms of an updated version of an app, or a new one, it would be nice to see, but keep in mind that there will be lots of work involved for the developer.