An app is major overkill and if anything dilutes your user base. Think about it.
A new member comes to your forum and are presented with the current not-so-great responsive design. A big ass popup shows up "DOWNLOAD THE <MYFORUM> APP NOW!" 99% of people will just go "um...how about no" and leave.
Compare that to a user arriving at a forum that LOOKS and FEELS like a native app - they are instantly presented with that they wanted.
In what universe is that second option not the better one? Mobile apps are not faster by any means when you're pulling in a massive quantity of it's content from an api. Sure, the 'feel' is slightly more native. But if your mobile design is done correctly you'd never know the difference.
As an example, a massive number of iOS apps are acutually html, css and javascript with a wrapper. What you're seeing in some of these apps is essentially a full screen web page. You'd never know and that's only down to the design/ux side of things. If it's done right on the main design of your forums, it'll never be an issue.
Put bluntly, an app is an admittance that you suck at getting a decent mobile-first design done that provides a consistent experience across all resolutions be it touch or mouse based.
A new member comes to your forum and are presented with the current not-so-great responsive design. A big ass popup shows up "DOWNLOAD THE <MYFORUM> APP NOW!" 99% of people will just go "um...how about no" and leave.
Compare that to a user arriving at a forum that LOOKS and FEELS like a native app - they are instantly presented with that they wanted.
In what universe is that second option not the better one? Mobile apps are not faster by any means when you're pulling in a massive quantity of it's content from an api. Sure, the 'feel' is slightly more native. But if your mobile design is done correctly you'd never know the difference.
As an example, a massive number of iOS apps are acutually html, css and javascript with a wrapper. What you're seeing in some of these apps is essentially a full screen web page. You'd never know and that's only down to the design/ux side of things. If it's done right on the main design of your forums, it'll never be an issue.
Put bluntly, an app is an admittance that you suck at getting a decent mobile-first design done that provides a consistent experience across all resolutions be it touch or mouse based.