Appthemes does not offer hosting, only Wordpress themes.
No mobile and smart phone app yet but this can be done through code customization and or through the use of a plugin.
Please help our moderating team work more efficiently by not sending us support questions via PM. You can read more about how AppThemes support works
here. However, you can send a PM to follow up and remind me if I missed your support request/thread.
Thank you and have a nice day.