None of the major AI Automatic Article Generators could launch the mobile App until now. Important to realize that copywriting is considered a serious job. That could be comfortably done on a quite large screen along with a decent size keypad. Therefore, a laptop is quite a reasonable choice for writers. That could be the probable reason for not launching mobile apps by these players. However, most of them have PWAs (Progressive Web Apps) or Web Apps. Notably, PWAs are written to run inside a web browser and are known to provide a native app-like user experience.