> as long as it can be wrapped in a good cross platform layer (which means that it boils down to website repackaged with the platform's out-of-browser payment

> as long as it can be wrapped in a good cross platform layer (which means that it boils down to website repackaged with the platform's out-of-browser payment mechanism). If you are trying to build a cross-platform application using some large framework, it will likely be too large. There is an upper size limit of 10 MB. Once you move to platform specific tech, you can do things like grab just the image assets needed for a particular device dot pitch and resolution. Hypothetically you could use those in a WKWebView to render HTML content, although I do not know of existing efforts to do so. If it is more than four screens I would expect the technology to be a bad fit. If you could figure out maintenance of menu changes, you'd likely be better off just using native libraries (similarly, sometimes its better to just use PHP and inline javascript)