The Nokia Pro Camera app is reserved for the high-end phones of the Lumia line - the 1020, 925, 928 and 920. However, there are ways, unofficial ways, to install the app on other Windows Phone handsets. The Windows Blog Italia demonstrates a way to put the camera app on the HTC Windows Phone 8X. The HTC WP 8X also received the GDR2 update for Windows Phone 8 (on Lumia phones that was part...
Source: http://www.gsmarena.com/nokia_pro_camera_installed_on_htc_8x_mostly_working-news-6661.php
