Take a look at Samsung apps, their privacy policy :
When you upload, transmit, create, post, display or otherwise provide any information, materials, documents, media files or other content on or through our Sites (“User Content”) you grant us an irrevocable, unlimited, worldwide, royalty-free, and non-exclusive license to copy, reproduce, adapt, modify, edit, distribute, translate, publish, publicly perform and publicly display the User Content (“User Content License”), to the full extent allowed by Applicable Law
Google is not the only one to collect a hell lot of your data